Cherry-pick: cldr-ticket 11751: Time zone data updates for 2018h and 2018i
Cherrypick https://unicode.org/cldr/trac/changeset/14742
Briefly (2018h):
Qyzylorda, Kazakhstan moved from +06 to +05 on 2018-12-21.
New zone Asia/Qostanay because Qostanay, Kazakhstan didn't move.
Metlakatla, Alaska observes PST this winter only.
Guess Morocco will continue to adjust clocks around Ramadan.
Add predictions for Iran from 2038 through 2090.
Briefly (2018i):
Sao Tome and Principe switches from +01 to +00 on 2019-01-01.
Bug: 122448923
Test: None (see the associated external/icu/ change)
Change-Id: I39c81bb3fb93edbfffc2e5c52ce8239ed3855c4c
diff --git a/common/bcp47/timezone.xml b/common/bcp47/timezone.xml
index 35f8fc8..57551dd 100644
--- a/common/bcp47/timezone.xml
+++ b/common/bcp47/timezone.xml
@@ -240,6 +240,7 @@
<type name="kzakx" description="Aqtobe, Kazakhstan" alias="Asia/Aqtobe"/>
<type name="kzala" description="Almaty, Kazakhstan" alias="Asia/Almaty"/>
<type name="kzguw" description="Atyrau (Guryev), Kazakhstan" alias="Asia/Atyrau" since="31"/>
+ <type name="kzksn" description="Qostanay (Kostanay), Kazakhstan" alias="Asia/Qostanay" since="35"/>
<type name="kzkzo" description="Kyzylorda, Kazakhstan" alias="Asia/Qyzylorda"/>
<type name="kzura" description="Oral, Kazakhstan" alias="Asia/Oral"/>
<type name="lavte" description="Vientiane, Laos" alias="Asia/Vientiane"/>
diff --git a/common/main/en.xml b/common/main/en.xml
index 210c973..eb0bd7c 100644
--- a/common/main/en.xml
+++ b/common/main/en.xml
@@ -3202,6 +3202,9 @@
<zone type="America/St_Barthelemy">
<exemplarCity>St. Barthélemy</exemplarCity>
</zone>
+ <zone type="Asia/Qostanay">
+ <exemplarCity>Kostanay</exemplarCity>
+ </zone>
<zone type="America/Curacao">
<exemplarCity>Curaçao</exemplarCity>
</zone>
diff --git a/common/supplemental/metaZones.xml b/common/supplemental/metaZones.xml
index d0f62eb..84409cc 100644
--- a/common/supplemental/metaZones.xml
+++ b/common/supplemental/metaZones.xml
@@ -56,8 +56,7 @@
<timezone type="Africa/Casablanca">
<usesMetazone to="1984-03-16 00:00" mzone="Europe_Western"/>
<usesMetazone to="1985-12-31 23:00" from="1984-03-16 00:00" mzone="Europe_Central"/>
- <usesMetazone to="2018-10-26 23:00" from="1985-12-31 23:00" mzone="Europe_Western"/>
- <usesMetazone from="2018-10-26 23:00" mzone="Europe_Central"/>
+ <usesMetazone to="2018-10-28 02:00" from="1985-12-31 23:00" mzone="Europe_Western"/>
</timezone>
<timezone type="Africa/Ceuta">
<usesMetazone to="1984-03-16 00:00" mzone="Europe_Western"/>
@@ -80,8 +79,7 @@
</timezone>
<timezone type="Africa/El_Aaiun">
<usesMetazone to="1976-04-14 01:00" mzone="Africa_FarWestern"/>
- <usesMetazone to="2018-10-26 23:00" from="1976-04-14 01:00" mzone="Europe_Western"/>
- <usesMetazone from="2018-10-26 23:00" mzone="Europe_Central"/>
+ <usesMetazone to="2018-10-28 02:00" from="1976-04-14 01:00" mzone="Europe_Western"/>
</timezone>
<timezone type="Africa/Freetown">
<usesMetazone mzone="GMT"/>
@@ -170,7 +168,8 @@
</timezone>
<timezone type="Africa/Sao_Tome">
<usesMetazone to="2018-01-01 01:00" mzone="GMT"/>
- <usesMetazone from="2018-01-01 01:00" mzone="Africa_Western"/>
+ <usesMetazone to="2019-01-01 01:00" from="2018-01-01 01:00" mzone="Africa_Western"/>
+ <usesMetazone from="2019-01-01 01:00" mzone="GMT"/>
</timezone>
<timezone type="Africa/Tripoli">
<usesMetazone to="1981-12-31 22:00" mzone="Europe_Eastern"/>
@@ -562,7 +561,9 @@
</timezone>
<timezone type="America/Metlakatla">
<usesMetazone to="2015-11-01 10:00" mzone="America_Pacific"/>
- <usesMetazone from="2015-11-01 10:00" mzone="Alaska"/>
+ <usesMetazone to="2018-11-04 10:00" from="2015-11-01 10:00" mzone="Alaska"/>
+ <usesMetazone to="2019-03-10 11:00" from="2018-11-04 10:00" mzone="America_Pacific"/>
+ <usesMetazone from="2019-03-10 11:00" mzone="Alaska"/>
</timezone>
<timezone type="America/Mexico_City">
<usesMetazone mzone="America_Central"/>
@@ -1013,10 +1014,14 @@
<usesMetazone to="1972-05-31 20:00" mzone="Gulf"/>
<usesMetazone from="1972-05-31 20:00" mzone="Arabian"/>
</timezone>
+ <timezone type="Asia/Qostanay">
+ <usesMetazone from="2004-10-30 21:00" mzone="Kazakhstan_Eastern"/>
+ </timezone>
<timezone type="Asia/Qyzylorda">
<usesMetazone to="1991-12-15 19:00" mzone="Kizilorda"/>
<usesMetazone to="2004-10-30 21:00" from="1991-12-15 19:00" mzone="Qyzylorda"/>
- <usesMetazone from="2004-10-30 21:00" mzone="Kazakhstan_Eastern"/>
+ <usesMetazone to="2018-12-20 18:00" from="2004-10-30 21:00" mzone="Kazakhstan_Eastern"/>
+ <usesMetazone from="2018-12-20 18:00" mzone="Kazakhstan_Western"/>
</timezone>
<timezone type="Asia/Rangoon">
<usesMetazone mzone="Myanmar"/>
@@ -1489,8 +1494,8 @@
<usesMetazone mzone="Kosrae"/>
</timezone>
<timezone type="Pacific/Kwajalein">
- <usesMetazone to="1993-08-20 12:00" mzone="Kwajalein"/>
- <usesMetazone from="1993-08-20 12:00" mzone="Marshall_Islands"/>
+ <usesMetazone to="1993-08-21 12:00" mzone="Kwajalein"/>
+ <usesMetazone from="1993-08-21 12:00" mzone="Marshall_Islands"/>
</timezone>
<timezone type="Pacific/Majuro">
<usesMetazone mzone="Marshall_Islands"/>
diff --git a/common/supplemental/windowsZones.xml b/common/supplemental/windowsZones.xml
index f12064a..6a271f5 100644
--- a/common/supplemental/windowsZones.xml
+++ b/common/supplemental/windowsZones.xml
@@ -9,7 +9,7 @@
<supplementalData>
<version number="$Revision: 14334 $"/>
<windowsZones>
- <mapTimezones otherVersion="7e10c00" typeVersion="2018g">
+ <mapTimezones otherVersion="7e10c00" typeVersion="2018i">
<!-- (UTC-12:00) International Date Line West -->
<mapZone other="Dateline Standard Time" territory="001" type="Etc/GMT+12"/>
@@ -40,7 +40,7 @@
<!-- (UTC-09:00) Alaska -->
<mapZone other="Alaskan Standard Time" territory="001" type="America/Anchorage"/>
- <mapZone other="Alaskan Standard Time" territory="US" type="America/Anchorage America/Juneau America/Metlakatla America/Nome America/Sitka America/Yakutat"/>
+ <mapZone other="Alaskan Standard Time" territory="US" type="America/Anchorage America/Juneau America/Nome America/Sitka America/Yakutat"/>
<!-- (UTC-09:00) Coordinated Universal Time-09 -->
<mapZone other="UTC-09" territory="001" type="Etc/GMT+9"/>
@@ -59,7 +59,7 @@
<!-- (UTC-08:00) Pacific Time (US & Canada) -->
<mapZone other="Pacific Standard Time" territory="001" type="America/Los_Angeles"/>
<mapZone other="Pacific Standard Time" territory="CA" type="America/Vancouver America/Dawson America/Whitehorse"/>
- <mapZone other="Pacific Standard Time" territory="US" type="America/Los_Angeles"/>
+ <mapZone other="Pacific Standard Time" territory="US" type="America/Los_Angeles America/Metlakatla"/>
<mapZone other="Pacific Standard Time" territory="ZZ" type="PST8PDT"/>
<!-- (UTC-07:00) Arizona -->
@@ -528,7 +528,7 @@
<!-- (UTC+05:00) Ashgabat, Tashkent -->
<mapZone other="West Asia Standard Time" territory="001" type="Asia/Tashkent"/>
<mapZone other="West Asia Standard Time" territory="AQ" type="Antarctica/Mawson"/>
- <mapZone other="West Asia Standard Time" territory="KZ" type="Asia/Oral Asia/Aqtau Asia/Aqtobe Asia/Atyrau"/>
+ <mapZone other="West Asia Standard Time" territory="KZ" type="Asia/Oral Asia/Aqtau Asia/Aqtobe Asia/Atyrau Asia/Qyzylorda"/>
<mapZone other="West Asia Standard Time" territory="MV" type="Indian/Maldives"/>
<mapZone other="West Asia Standard Time" territory="TF" type="Indian/Kerguelen"/>
<mapZone other="West Asia Standard Time" territory="TJ" type="Asia/Dushanbe"/>
@@ -562,7 +562,7 @@
<mapZone other="Central Asia Standard Time" territory="CN" type="Asia/Urumqi"/>
<mapZone other="Central Asia Standard Time" territory="IO" type="Indian/Chagos"/>
<mapZone other="Central Asia Standard Time" territory="KG" type="Asia/Bishkek"/>
- <mapZone other="Central Asia Standard Time" territory="KZ" type="Asia/Almaty Asia/Qyzylorda"/>
+ <mapZone other="Central Asia Standard Time" territory="KZ" type="Asia/Almaty Asia/Qostanay"/>
<mapZone other="Central Asia Standard Time" territory="ZZ" type="Etc/GMT-6"/>
<!-- (UTC+06:00) Dhaka -->
diff --git a/tools/java/org/unicode/cldr/util/data/africa b/tools/java/org/unicode/cldr/util/data/africa
index dcc20b9..0a0f586 100644
--- a/tools/java/org/unicode/cldr/util/data/africa
+++ b/tools/java/org/unicode/cldr/util/data/africa
@@ -1,3 +1,5 @@
+# tzdb data for Africa and environs
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
@@ -6,7 +8,7 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2017-02-20):
+# From Paul Eggert (2018-05-27):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
@@ -26,7 +28,7 @@
#
# For data circa 1899, a common source is:
# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
-# http://www.jstor.org/stable/1774359
+# https://www.jstor.org/stable/1774359
#
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
@@ -51,13 +53,15 @@
# I vaguely recall 'WAT' also being used for -01 in the past but
# cannot now come up with solid citations.
#
-# I invented the following abbreviations; corrections are welcome!
+# I invented the following abbreviations in the 1990s:
# +02 WAST West Africa Summer Time
-# +03 CAST Central Africa Summer Time (no longer used)
-# +03 SAST South Africa Summer Time (no longer used)
+# +03 CAST Central Africa Summer Time
+# +03 SAST South Africa Summer Time
# +03 EAT East Africa Time
-# 'EAT' also seems to have caught on; the others are rare but are paired
-# with better-attested non-DST abbreviations.
+# 'EAT' seems to have caught on and is in current timestamps, and though
+# the other abbreviations are rarer and are only in past timestamps,
+# they are paired with better-attested non-DST abbreviations.
+# Corrections are welcome.
# Algeria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@@ -115,13 +119,13 @@
# Cape Verde / Cabo Verde
#
+# From Paul Eggert (2018-02-16):
# Shanks gives 1907 for the transition to +02.
-# Perhaps the 1911-05-26 Portuguese decree
-# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
-# merely made it official?
+# For now, ignore that and follow the 1911-05-26 Portuguese decree
+# (see Europe/Lisbon).
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Atlantic/Cape_Verde -1:34:04 - LMT 1907 # Praia
+Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia
-2:00 - -02 1942 Sep
-2:00 1:00 -01 1945 Oct 15
-2:00 - -02 1975 Nov 25 2:00
@@ -158,7 +162,6 @@
Link Africa/Abidjan Africa/Lome # Togo
Link Africa/Abidjan Africa/Nouakchott # Mauritania
Link Africa/Abidjan Africa/Ouagadougou # Burkina Faso
-Link Africa/Abidjan Africa/Sao_Tome # São Tomé and Príncipe
Link Africa/Abidjan Atlantic/St_Helena # St Helena
# Djibouti
@@ -218,7 +221,7 @@
# saving time in Egypt will end in the night of 2007-09-06 to 2007-09-07.
# From Jesper Nørgaard Welen (2007-08-15): [The following agree:]
# http://www.nentjes.info/Bill/bill5.htm
-# http://www.timeanddate.com/worldclock/city.html?n=53
+# https://www.timeanddate.com/worldclock/city.html?n=53
# From Steffen Thorsen (2007-09-04): The official information...:
# http://www.sis.gov.eg/En/EgyptOnline/Miscellaneous/000002/0207000000000000001580.htm
Rule Egypt 2007 only - Sep Thu>=1 24:00 0 -
@@ -256,8 +259,8 @@
# timeanddate[2] and another site I've found[3] also support that.
#
# [1] https://bugzilla.redhat.com/show_bug.cgi?id=492263
-# [2] http://www.timeanddate.com/worldclock/clockchange.html?n=53
-# [3] http://wwp.greenwichmeantime.com/time-zone/africa/egypt/
+# [2] https://www.timeanddate.com/worldclock/clockchange.html?n=53
+# [3] https://wwp.greenwichmeantime.com/time-zone/africa/egypt/
# From Arthur David Olson (2009-04-20):
# In 2009 (and for the next several years), Ramadan ends before the fourth
@@ -267,10 +270,10 @@
# From Steffen Thorsen (2009-08-11):
# We have been able to confirm the August change with the Egyptian Cabinet
# Information and Decision Support Center:
-# http://www.timeanddate.com/news/time/egypt-dst-ends-2009.html
+# https://www.timeanddate.com/news/time/egypt-dst-ends-2009.html
#
# The Middle East News Agency
-# http://www.mena.org.eg/index.aspx
+# https://www.mena.org.eg/index.aspx
# also reports "Egypt starts winter time on August 21"
# today in article numbered "71, 11/08/2009 12:25 GMT."
# Only the title above is available without a subscription to their service,
@@ -320,7 +323,7 @@
# Thursday of April.... Clocks will still be turned back for Ramadan, but
# dates not yet announced....
# http://almogaz.com/news/weird-news/2015/04/05/1947105 ...
-# http://www.timeanddate.com/news/time/egypt-starts-dst-2015.html
+# https://www.timeanddate.com/news/time/egypt-starts-dst-2015.html
# From Ahmed Nazmy (2015-04-20):
# Egypt's ministers cabinet just announced ... that it will cancel DST at
@@ -363,6 +366,13 @@
# Eritrea
# Ethiopia
# See Africa/Nairobi.
+#
+# Unfortunately tzdb records only Western clock time in use in Ethiopia,
+# as the tzdb format is not up to properly recording a common Ethiopian
+# timekeeping practice that is based on solar time. See:
+# Mortada D. If you have a meeting in Ethiopia, you'd better double
+# check the time. PRI's The World. 2015-01-30 15:15 -05.
+# https://www.pri.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time
# Gabon
# See Africa/Lagos.
@@ -371,15 +381,34 @@
# See Africa/Abidjan.
# Ghana
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+
+# From Paul Eggert (2018-01-30):
# Whitman says DST was observed from 1931 to "the present";
-# Shanks & Pottenger say 1936 to 1942;
-# and September 1 to January 1 is given by:
-# Scott Keltie J, Epstein M (eds), The Statesman's Year-Book,
-# 57th ed. Macmillan, London (1920), OCLC 609408015, pp xxviii.
-# For lack of better info, assume DST was observed from 1920 to 1942.
-Rule Ghana 1920 1942 - Sep 1 0:00 0:20 GHST
-Rule Ghana 1920 1942 - Dec 31 0:00 0 GMT
+# Shanks & Pottenger say 1936 to 1942 with 20 minutes of DST,
+# with transitions on 09-01 and 12-31 at 00:00.
+# Page 33 of Parish GCB, Colonial Reports - Annual. No. 1066. Gold
+# Coast. Report for 1919. (March 1921), OCLC 784024077
+# http://libsysdigi.library.illinois.edu/ilharvest/africana/books2011-05/5530214/5530214_1919/5530214_1919_opt.pdf
+# lists the Determination of the Time Ordinance, 1919, No. 18,
+# "to advance the time observed locally by the space of twenty minutes
+# during the last four months of each year; the object in view being
+# to extend during those months the period of daylight-time available
+# for evening recreation after office hours."
+# Vanessa Ogle, The Global Transformation of Time, 1870-1950 (2015), p 33,
+# writes "In 1919, the Gold Coast (Ghana as of 1957) made Greenwich
+# time its legal time and simultaneously legalized a summer time of
+# UTC - 00:20 minutes from March to October."; a footnote lists
+# the ordinance as being dated 1919-11-24.
+# The Crown Colonist, Volume 12 (1942), p 176, says "the Government
+# intend advancing Gold Coast time half an hour ahead of G.M.T.
+# The actual date of the alteration has not yet been announced."
+# These sources are incomplete and contradictory. Possibly what is
+# now Ghana observed different DST regimes in different years. For
+# lack of better info, use Shanks except treat the minus sign as a
+# typo, and assume DST started in 1920 not 1936.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Ghana 1920 1942 - Sep 1 0:00 0:20 -
+Rule Ghana 1920 1942 - Dec 31 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Accra -0:00:52 - LMT 1918
0:00 Ghana GMT/+0020
@@ -389,13 +418,13 @@
# Guinea-Bissau
#
+# From Paul Eggert (2018-02-16):
# Shanks gives 1911-05-26 for the transition to WAT,
# evidently confusing the date of the Portuguese decree
-# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
-# with the date that it took effect, namely 1912-01-01.
+# (see Europe/Lisbon) with the date that it took effect.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1
+Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u
-1:00 - -01 1975
0:00 - GMT
@@ -425,7 +454,7 @@
#
# The Nautical Almanac for the Year 1970, p 264, is the source for -0:44:30.
#
-# In 1972 Liberia was the last country to switch from a UTC offset
+# In 1972 Liberia was the last country to switch from a UT offset
# that was not a multiple of 15 or 20 minutes. The 1972 change was on
# 1972-01-07, according to an entry dated 1972-01-04 on p 330 of:
# Presidential Papers: First year of the administration of
@@ -447,11 +476,11 @@
# From Even Scharning (2012-11-10):
# Libya set their time one hour back at 02:00 on Saturday November 10.
-# http://www.libyaherald.com/2012/11/04/clocks-to-go-back-an-hour-on-saturday/
+# https://www.libyaherald.com/2012/11/04/clocks-to-go-back-an-hour-on-saturday/
# Here is an official source [in Arabic]: http://ls.ly/fb6Yc
#
# Steffen Thorsen forwarded a translation (2012-11-10) in
-# http://mm.icann.org/pipermail/tz/2012-November/018451.html
+# https://mm.icann.org/pipermail/tz/2012-November/018451.html
#
# From Tim Parenti (2012-11-11):
# Treat the 2012-11-10 change as a zone change from UTC+2 to UTC+1.
@@ -462,7 +491,7 @@
# From Even Scharning (2013-10-25):
# The scheduled end of DST in Libya on Friday, October 25, 2013 was
# cancelled yesterday....
-# http://www.libyaherald.com/2013/10/24/correction-no-time-change-tomorrow/
+# https://www.libyaherald.com/2013/10/24/correction-no-time-change-tomorrow/
#
# From Paul Eggert (2013-10-25):
# For now, assume they're reverting to the pre-2012 rules of permanent UT +02.
@@ -515,7 +544,7 @@
# basis....
# It seems that Mauritius observed daylight saving time from 1982-10-10 to
# 1983-03-20 as well, but that was not successful....
-# http://www.timeanddate.com/news/time/mauritius-daylight-saving-time.html
+# https://www.timeanddate.com/news/time/mauritius-daylight-saving-time.html
# From Alex Krivenyshev (2008-06-25):
# http://economicdevelopment.gov.mu/portal/site/Mainhomepage/menuitem.a42b24128104d9845dabddd154508a0c/?content_id=0a7cee8b5d69a110VgnVCM1000000a04a8c0RCRD
@@ -583,7 +612,7 @@
# http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-%C3%A9conomie-d-%C3%A9nergie-de-l-heure-d-%C3%A9t%C3%A9-ont-%C3%A9t%C3%A9-atteints-
#
# Our wrap-up:
-# http://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html
+# https://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html
# From Arthur David Olson (2009-07-11):
# The "mauritius-dst-will-not-repeat" wrapup includes this:
@@ -591,9 +620,9 @@
# at 2am (or 02:00) local time..."
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Mauritius 1982 only - Oct 10 0:00 1:00 S
+Rule Mauritius 1982 only - Oct 10 0:00 1:00 -
Rule Mauritius 1983 only - Mar 21 0:00 0 -
-Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 S
+Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 -
Rule Mauritius 2009 only - Mar lastSun 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
@@ -615,7 +644,7 @@
# be one hour ahead of GMT between 1 June and 27 September, according to
# Communication Minister and Government Spokesman, Khalid Naciri...."
#
-# http://www.worldtimezone.net/dst_news/dst_news_morocco01.html
+# http://www.worldtimezone.com/dst_news/dst_news_morocco01.html
# http://en.afrik.com/news11892.html
# From Alex Krivenyshev (2008-05-09):
@@ -628,7 +657,7 @@
# From Patrice Scattolin (2008-05-09):
# According to this article:
-# http://www.avmaroc.com/actualite/heure-dete-comment-a127896.html
+# https://www.avmaroc.com/actualite/heure-dete-comment-a127896.html
# (and republished here: <http://www.actu.ma/heure-dete-comment_i127896_0.html>)
# the changes occur at midnight:
#
@@ -650,7 +679,7 @@
# posted in English).
#
# The following Google query will generate many relevant hits:
-# http://www.google.com/search?hl=en&q=Conseil+de+gouvernement+maroc+heure+avance&btnG=Search
+# https://www.google.com/search?hl=en&q=Conseil+de+gouvernement+maroc+heure+avance&btnG=Search
# From Steffen Thorsen (2008-08-27):
# Morocco will change the clocks back on the midnight between August 31
@@ -661,7 +690,7 @@
# http://www.menara.ma/fr/Actualites/Maroc/Societe/ci.retour_a_l_heure_gmt_a_partir_du_dimanche_31_aout_a_minuit_officiel_.default
#
# We have some further details posted here:
-# http://www.timeanddate.com/news/time/morocco-ends-dst-early-2008.html
+# https://www.timeanddate.com/news/time/morocco-ends-dst-early-2008.html
# From Steffen Thorsen (2009-03-17):
# Morocco will observe DST from 2009-06-01 00:00 to 2009-08-21 00:00 according
@@ -671,7 +700,7 @@
# (French)
#
# Our summary:
-# http://www.timeanddate.com/news/time/morocco-starts-dst-2009.html
+# https://www.timeanddate.com/news/time/morocco-starts-dst-2009.html
# From Alexander Krivenyshev (2009-03-17):
# Here is a link to official document from Royaume du Maroc Premier Ministre,
@@ -694,7 +723,7 @@
# http://www.lavieeco.com/actualites/4099-le-maroc-passera-a-l-heure-d-ete-gmt1-le-2-mai.html
# (French)
# Our page:
-# http://www.timeanddate.com/news/time/morocco-starts-dst-2010.html
+# https://www.timeanddate.com/news/time/morocco-starts-dst-2010.html
# From Dan Abitol (2011-03-30):
# ...Rules for Africa/Casablanca are the following (24h format)
@@ -711,7 +740,7 @@
# They said that the decision was already taken.
#
# More articles in the press
-# http://www.yabiladi.com/articles/details/5058/secret-l-heure-d-ete-maroc-leve.html
+# https://www.yabiladi.com/articles/details/5058/secret-l-heure-d-ete-maroc-leve.html
# http://www.lematin.ma/Actualite/Express/Article.asp?id=148923
# http://www.lavieeco.com/actualite/Le-Maroc-passe-sur-GMT%2B1-a-partir-de-dim
@@ -803,7 +832,7 @@
# 1433 (18 April 2012) and the decision of the Head of Government of
# 16 N. 3-29-15 Chaaban 1435 (4 June 2015).
# Source (french):
-# http://lnt.ma/le-maroc-reculera-dune-heure-le-dimanche-14-juin/
+# https://lnt.ma/le-maroc-reculera-dune-heure-le-dimanche-14-juin/
#
# From Milamber (2015-06-09):
# http://www.mmsp.gov.ma/fr/actualites.aspx?id=863
@@ -812,17 +841,30 @@
# [The gov.ma announcement] would (probably) make the switch on 2015-07-19 go
# from 03:00 to 04:00 rather than from 02:00 to 03:00, as in the patch....
# I think the patch is correct and the quoted text is wrong; the text in
-# <http://lnt.ma/le-maroc-reculera-dune-heure-le-dimanche-14-juin/> agrees
+# <https://lnt.ma/le-maroc-reculera-dune-heure-le-dimanche-14-juin/> agrees
# with the patch.
-# From Paul Eggert (2015-06-08):
-# For now, guess that later spring and fall transitions will use 2015's rules,
-# and guess that Morocco will switch to standard time at 03:00 the last
-# Sunday before Ramadan, and back to DST at 02:00 the first Sunday after
-# Ramadan. To implement this, transition dates for 2016 through 2037 were
-# determined by running the following program under GNU Emacs 24.3, with the
-# results integrated by hand into the table below.
-# (let ((islamic-year 1437))
+# From Mohamed Essedik Najd (2018-10-26):
+# Today, a Moroccan government council approved the perpetual addition
+# of 60 minutes to the regular Moroccan timezone.
+# From Matt Johnson (2018-10-28):
+# http://www.sgg.gov.ma/Portals/1/BO/2018/BO_6720-bis_Ar.pdf
+#
+# From Maamar Abdelkader (2018-11-01):
+# We usually move clocks back the previous week end and come back to the +1
+# the week end after.... The government does not announce yet the decision
+# about this temporary change. But it s 99% sure that it will be the case,
+# as in previous years. An unofficial survey was done these days, showing
+# that 64% of asked peopke are ok for moving from +1 to +0 during Ramadan.
+# https://leconomiste.com/article/1035870-enquete-l-economiste-sunergia-64-des-marocains-plebiscitent-le-gmt-pendant-ramadan
+#
+# From Paul Eggert (2018-11-01):
+# For now, guess that Morocco will fall back at 03:00 the last Sunday
+# before Ramadan, and spring forward at 02:00 the first Sunday after
+# Ramadan, as this has been the practice since 2012. To implement this,
+# transition dates for 2019 through 2037 were determined by running the
+# following program under GNU Emacs 26.1.
+# (let ((islamic-year 1440))
# (require 'cal-islam)
# (while (< islamic-year 1460)
# (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year)))
@@ -835,74 +877,101 @@
# (setq b (calendar-gregorian-from-absolute b))
# (insert
# (format
-# (concat "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 3:00\t0\t-\n"
-# "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 2:00\t1:00\tS\n")
+# (concat "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 3:00\t-1:00\t-\n"
+# "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 2:00\t0\t-\n")
# (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a))
# (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b)))))
# (setq islamic-year (+ 1 islamic-year))))
# RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-
-Rule Morocco 1939 only - Sep 12 0:00 1:00 S
+Rule Morocco 1939 only - Sep 12 0:00 1:00 -
Rule Morocco 1939 only - Nov 19 0:00 0 -
-Rule Morocco 1940 only - Feb 25 0:00 1:00 S
+Rule Morocco 1940 only - Feb 25 0:00 1:00 -
Rule Morocco 1945 only - Nov 18 0:00 0 -
-Rule Morocco 1950 only - Jun 11 0:00 1:00 S
+Rule Morocco 1950 only - Jun 11 0:00 1:00 -
Rule Morocco 1950 only - Oct 29 0:00 0 -
-Rule Morocco 1967 only - Jun 3 12:00 1:00 S
+Rule Morocco 1967 only - Jun 3 12:00 1:00 -
Rule Morocco 1967 only - Oct 1 0:00 0 -
-Rule Morocco 1974 only - Jun 24 0:00 1:00 S
+Rule Morocco 1974 only - Jun 24 0:00 1:00 -
Rule Morocco 1974 only - Sep 1 0:00 0 -
-Rule Morocco 1976 1977 - May 1 0:00 1:00 S
+Rule Morocco 1976 1977 - May 1 0:00 1:00 -
Rule Morocco 1976 only - Aug 1 0:00 0 -
Rule Morocco 1977 only - Sep 28 0:00 0 -
-Rule Morocco 1978 only - Jun 1 0:00 1:00 S
+Rule Morocco 1978 only - Jun 1 0:00 1:00 -
Rule Morocco 1978 only - Aug 4 0:00 0 -
-Rule Morocco 2008 only - Jun 1 0:00 1:00 S
+Rule Morocco 2008 only - Jun 1 0:00 1:00 -
Rule Morocco 2008 only - Sep 1 0:00 0 -
-Rule Morocco 2009 only - Jun 1 0:00 1:00 S
+Rule Morocco 2009 only - Jun 1 0:00 1:00 -
Rule Morocco 2009 only - Aug 21 0:00 0 -
-Rule Morocco 2010 only - May 2 0:00 1:00 S
+Rule Morocco 2010 only - May 2 0:00 1:00 -
Rule Morocco 2010 only - Aug 8 0:00 0 -
-Rule Morocco 2011 only - Apr 3 0:00 1:00 S
+Rule Morocco 2011 only - Apr 3 0:00 1:00 -
Rule Morocco 2011 only - Jul 31 0:00 0 -
-Rule Morocco 2012 2013 - Apr lastSun 2:00 1:00 S
+Rule Morocco 2012 2013 - Apr lastSun 2:00 1:00 -
Rule Morocco 2012 only - Jul 20 3:00 0 -
-Rule Morocco 2012 only - Aug 20 2:00 1:00 S
+Rule Morocco 2012 only - Aug 20 2:00 1:00 -
Rule Morocco 2012 only - Sep 30 3:00 0 -
Rule Morocco 2013 only - Jul 7 3:00 0 -
-Rule Morocco 2013 only - Aug 10 2:00 1:00 S
-Rule Morocco 2013 max - Oct lastSun 3:00 0 -
-Rule Morocco 2014 2021 - Mar lastSun 2:00 1:00 S
+Rule Morocco 2013 only - Aug 10 2:00 1:00 -
+Rule Morocco 2013 2018 - Oct lastSun 3:00 0 -
+Rule Morocco 2014 2018 - Mar lastSun 2:00 1:00 -
Rule Morocco 2014 only - Jun 28 3:00 0 -
-Rule Morocco 2014 only - Aug 2 2:00 1:00 S
+Rule Morocco 2014 only - Aug 2 2:00 1:00 -
Rule Morocco 2015 only - Jun 14 3:00 0 -
-Rule Morocco 2015 only - Jul 19 2:00 1:00 S
+Rule Morocco 2015 only - Jul 19 2:00 1:00 -
Rule Morocco 2016 only - Jun 5 3:00 0 -
-Rule Morocco 2016 only - Jul 10 2:00 1:00 S
+Rule Morocco 2016 only - Jul 10 2:00 1:00 -
Rule Morocco 2017 only - May 21 3:00 0 -
-Rule Morocco 2017 only - Jul 2 2:00 1:00 S
+Rule Morocco 2017 only - Jul 2 2:00 1:00 -
Rule Morocco 2018 only - May 13 3:00 0 -
-Rule Morocco 2018 only - Jun 17 2:00 1:00 S
-Rule Morocco 2019 only - May 5 3:00 0 -
-Rule Morocco 2019 only - Jun 9 2:00 1:00 S
-Rule Morocco 2020 only - Apr 19 3:00 0 -
-Rule Morocco 2020 only - May 24 2:00 1:00 S
-Rule Morocco 2021 only - Apr 11 3:00 0 -
-Rule Morocco 2021 only - May 16 2:00 1:00 S
-Rule Morocco 2022 only - May 8 2:00 1:00 S
-Rule Morocco 2023 only - Apr 23 2:00 1:00 S
-Rule Morocco 2024 only - Apr 14 2:00 1:00 S
-Rule Morocco 2025 only - Apr 6 2:00 1:00 S
-Rule Morocco 2026 max - Mar lastSun 2:00 1:00 S
-Rule Morocco 2036 only - Oct 19 3:00 0 -
-Rule Morocco 2037 only - Oct 4 3:00 0 -
+Rule Morocco 2018 only - Jun 17 2:00 1:00 -
+Rule Morocco 2019 only - May 5 3:00 -1:00 -
+Rule Morocco 2019 only - Jun 9 2:00 0 -
+Rule Morocco 2020 only - Apr 19 3:00 -1:00 -
+Rule Morocco 2020 only - May 24 2:00 0 -
+Rule Morocco 2021 only - Apr 11 3:00 -1:00 -
+Rule Morocco 2021 only - May 16 2:00 0 -
+Rule Morocco 2022 only - Mar 27 3:00 -1:00 -
+Rule Morocco 2022 only - May 8 2:00 0 -
+Rule Morocco 2023 only - Mar 19 3:00 -1:00 -
+Rule Morocco 2023 only - Apr 23 2:00 0 -
+Rule Morocco 2024 only - Mar 10 3:00 -1:00 -
+Rule Morocco 2024 only - Apr 14 2:00 0 -
+Rule Morocco 2025 only - Feb 23 3:00 -1:00 -
+Rule Morocco 2025 only - Apr 6 2:00 0 -
+Rule Morocco 2026 only - Feb 15 3:00 -1:00 -
+Rule Morocco 2026 only - Mar 22 2:00 0 -
+Rule Morocco 2027 only - Feb 7 3:00 -1:00 -
+Rule Morocco 2027 only - Mar 14 2:00 0 -
+Rule Morocco 2028 only - Jan 23 3:00 -1:00 -
+Rule Morocco 2028 only - Feb 27 2:00 0 -
+Rule Morocco 2029 only - Jan 14 3:00 -1:00 -
+Rule Morocco 2029 only - Feb 18 2:00 0 -
+Rule Morocco 2029 only - Dec 30 3:00 -1:00 -
+Rule Morocco 2030 only - Feb 10 2:00 0 -
+Rule Morocco 2030 only - Dec 22 3:00 -1:00 -
+Rule Morocco 2031 only - Jan 26 2:00 0 -
+Rule Morocco 2031 only - Dec 14 3:00 -1:00 -
+Rule Morocco 2032 only - Jan 18 2:00 0 -
+Rule Morocco 2032 only - Nov 28 3:00 -1:00 -
+Rule Morocco 2033 only - Jan 9 2:00 0 -
+Rule Morocco 2033 only - Nov 20 3:00 -1:00 -
+Rule Morocco 2033 only - Dec 25 2:00 0 -
+Rule Morocco 2034 only - Nov 5 3:00 -1:00 -
+Rule Morocco 2034 only - Dec 17 2:00 0 -
+Rule Morocco 2035 only - Oct 28 3:00 -1:00 -
+Rule Morocco 2035 only - Dec 2 2:00 0 -
+Rule Morocco 2036 only - Oct 19 3:00 -1:00 -
+Rule Morocco 2036 only - Nov 23 2:00 0 -
+Rule Morocco 2037 only - Oct 4 3:00 -1:00 -
+Rule Morocco 2037 only - Nov 15 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26
- 0:00 Morocco WE%sT 1984 Mar 16
- 1:00 - CET 1986
- 0:00 Morocco WE%sT
+ 0:00 Morocco +00/+01 1984 Mar 16
+ 1:00 - +01 1986
+ 0:00 Morocco +00/+01 2018 Oct 28 3:00
+ 1:00 Morocco +01/+00
# Western Sahara
#
@@ -917,7 +986,8 @@
Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún
-1:00 - -01 1976 Apr 14
- 0:00 Morocco WE%sT
+ 0:00 Morocco +00/+01 2018 Oct 28 3:00
+ 1:00 Morocco +01/+00
# Mozambique
#
@@ -937,9 +1007,21 @@
Link Africa/Maputo Africa/Lubumbashi # E Dem. Rep. of Congo
Link Africa/Maputo Africa/Lusaka # Zambia
+
# Namibia
-# The 1994-04-03 transition is from Shanks & Pottenger.
-# Shanks & Pottenger report no DST after 1998-04; go with IATA.
+
+# From Arthur David Olson (2017-08-09):
+# The text of the "Namibia Time Act, 1994" is available online at
+# www.lac.org.na/laws/1994/811.pdf
+# and includes this nugget:
+# Notwithstanding the provisions of subsection (2) of section 1, the
+# first winter period after the commencement of this Act shall
+# commence at OOhOO on Monday 21 March 1994 and shall end at 02h00 on
+# Sunday 4 September 1994.
+
+# From Michael Deckers (2017-04-06):
+# ... both summer and winter time are called "standard"
+# (which differs from the use in Ireland) ...
# From Petronella Sibeene (2007-03-30):
# http://allafrica.com/stories/200703300178.html
@@ -955,19 +1037,53 @@
# observes Botswana time, we have no details about historical practice.
# In the meantime people there can use Africa/Gaborone.
# See: Immanuel S. The Namibian. 2017-02-23.
-# http://www.namibian.com.na/51480/read/Time-change-divides-lawmakers
+# https://www.namibian.com.na/51480/read/Time-change-divides-lawmakers
+
+# From Steffen Thorsen (2017-08-09):
+# Namibia is going to change their time zone to what is now their DST:
+# https://www.newera.com.na/2017/02/23/namibias-winter-time-might-be-repealed/
+# This video is from the government decision:
+# https://www.nbc.na/news/na-passes-namibia-time-bill-repealing-1994-namibia-time-act.8665
+# We have made the assumption so far that they will change their time zone at
+# the same time they would normally start DST, the first Sunday in September:
+# https://www.timeanddate.com/news/time/namibia-new-time-zone.html
+
+# From Paul Eggert (2017-04-09):
+# Before the change, summer and winter time were both standard time legally.
+# However in common parlance, winter time was considered to be DST. See, e.g.:
+# http://www.nbc.na/news/namibias-winter-time-could-be-scrapped.2706
+# https://zone.my.na/news/times-are-changing-in-namibia
+# https://www.newera.com.na/2017/02/23/namibias-winter-time-might-be-repealed/
+# Use plain "WAT" and "CAT" for the time zone abbreviations, to be compatible
+# with Namibia's neighbors.
# RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Namibia 1994 max - Sep Sun>=1 2:00 1:00 S
-Rule Namibia 1995 max - Apr Sun>=1 2:00 0 -
+# Vanguard section, for zic and other parsers that support negative DST.
+Rule Namibia 1994 only - Mar 21 0:00 -1:00 WAT
+Rule Namibia 1994 2017 - Sep Sun>=1 2:00 0 CAT
+Rule Namibia 1995 2017 - Apr Sun>=1 2:00 -1:00 WAT
+# Rearguard section, for parsers that do not support negative DST.
+#Rule Namibia 1994 only - Mar 21 0:00 0 WAT
+#Rule Namibia 1994 2017 - Sep Sun>=1 2:00 1:00 CAT
+#Rule Namibia 1995 2017 - Apr Sun>=1 2:00 0 WAT
+# End of rearguard section.
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8
1:30 - +0130 1903 Mar
2:00 - SAST 1942 Sep 20 2:00
2:00 1:00 SAST 1943 Mar 21 2:00
2:00 - SAST 1990 Mar 21 # independence
- 2:00 - CAT 1994 Apr 3
- 1:00 Namibia WA%sT
+# Vanguard section, for zic and other parsers that support negative DST.
+ 2:00 Namibia %s
+# Rearguard section, for parsers that do not support negative DST.
+# 2:00 - CAT 1994 Mar 21 0:00
+# From Paul Eggert (2017-04-07):
+# The official date of the 2017 rule change was 2017-10-24. See:
+# http://www.lac.org.na/laws/annoSTAT/Namibian%20Time%20Act%209%20of%202017.pdf
+# 1:00 Namibia %s 2017 Oct 24
+# 2:00 - CAT
+# End of rearguard section.
# Niger
# See Africa/Lagos.
@@ -1018,6 +1134,31 @@
# Inaccessible, Nightingale: uninhabited
# São Tomé and Príncipe
+
+# See Europe/Lisbon for info about the 1912 transition.
+
+# From Steffen Thorsen (2018-01-08):
+# Multiple sources tell that São Tomé changed from UTC to UTC+1 as
+# they entered the year 2018.
+# From Michael Deckers (2018-01-08):
+# the switch is from 01:00 to 02:00 ... [Decree No. 25/2017]
+# http://www.mnec.gov.st/index.php/publicacoes/documentos/file/90-decreto-lei-n-25-2017
+
+# From Vadim Nasardinov (2018-12-29):
+# São Tomé and Príncipe is about to do the following on Jan 1, 2019:
+# https://www.stp-press.st/2018/12/05/governo-jesus-ja-decidiu-repor-hora-legal-sao-tomense/
+#
+# From Michael Deckers (2018-12-30):
+# https://www.legis-palop.org/download.jsp?idFile=102818
+# ... [The legal time of the country, which coincides with universal
+# coordinated time, will be restituted at 2 o'clock on day 1 of January, 2019.]
+
+Zone Africa/Sao_Tome 0:26:56 - LMT 1884
+ -0:36:45 - LMT 1912 Jan 1 00:00u # Lisbon MT
+ 0:00 - GMT 2018 Jan 1 01:00
+ 1:00 - WAT 2019 Jan 1 02:00
+ 0:00 - GMT
+
# Senegal
# See Africa/Abidjan.
@@ -1054,14 +1195,24 @@
# no information
# Sudan
-#
+
# From <http://www.sunanews.net/sn13jane.html>
# Sudan News Agency (2000-01-13),
# also reported by Michaël De Beukelaer-Dossche via Steffen Thorsen:
# Clocks will be moved ahead for 60 minutes all over the Sudan as of noon
# Saturday.... This was announced Thursday by Caretaker State Minister for
# Manpower Abdul-Rahman Nur-Eddin.
+
+# From Ahmed Atyya, National Telecommunications Corp. (NTC), Sudan (2017-10-17):
+# ... the Republic of Sudan is going to change the time zone from (GMT+3:00)
+# to (GMT+ 2:00) starting from Wednesday 1 November 2017.
#
+# From Paul Eggert (2017-10-18):
+# A scanned copy (in Arabic) of Cabinet Resolution No. 352 for the
+# year 2017 can be found as an attachment in email today from Yahia
+# Abdalla of NTC, archived at:
+# https://mm.icann.org/pipermail/tz/2017-October/025333.html
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Sudan 1970 only - May 1 0:00 1:00 S
Rule Sudan 1970 1985 - Oct 15 0:00 0 -
@@ -1070,10 +1221,14 @@
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Khartoum 2:10:08 - LMT 1931
2:00 Sudan CA%sT 2000 Jan 15 12:00
- 3:00 - EAT
+ 3:00 - EAT 2017 Nov 1
+ 2:00 - CAT
# South Sudan
-Link Africa/Khartoum Africa/Juba
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Africa/Juba 2:06:28 - LMT 1931
+ 2:00 Sudan CA%sT 2000 Jan 15 12:00
+ 3:00 - EAT
# Swaziland
# See Africa/Johannesburg.
@@ -1111,11 +1266,11 @@
# According to several news sources, Tunisia will not observe DST this year.
# (Arabic)
# http://www.elbashayer.com/?page=viewn&nid=42546
-# http://www.babnet.net/kiwidetail-15295.asp
+# https://www.babnet.net/kiwidetail-15295.asp
#
# We have also confirmed this with the US embassy in Tunisia.
# We have a wrap-up about this on the following page:
-# http://www.timeanddate.com/news/time/tunisia-cancels-dst-2009.html
+# https://www.timeanddate.com/news/time/tunisia-cancels-dst-2009.html
# From Alexander Krivenyshev (2009-03-17):
# Here is a link to Tunis Afrique Presse News Agency
diff --git a/tools/java/org/unicode/cldr/util/data/antarctica b/tools/java/org/unicode/cldr/util/data/antarctica
index 3332d66..1dd9b00 100644
--- a/tools/java/org/unicode/cldr/util/data/antarctica
+++ b/tools/java/org/unicode/cldr/util/data/antarctica
@@ -1,3 +1,5 @@
+# tzdb data for Antarctica and environs
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
@@ -26,7 +28,7 @@
# Heard Island, McDonald Islands (uninhabited)
# previously sealers and scientific personnel wintered
# Margaret Turner reports
-# http://web.archive.org/web/20021204222245/http://www.dstc.qut.edu.au/DST/marg/daylight.html
+# https://web.archive.org/web/20021204222245/http://www.dstc.qut.edu.au/DST/marg/daylight.html
# (1999-09-30) that they're UT +05, with no DST;
# presumably this is when they have visitors.
#
@@ -47,7 +49,7 @@
# http://www.aad.gov.au/default.asp?casid=37079
#
# We have more background information here:
-# http://www.timeanddate.com/news/time/antarctica-new-times.html
+# https://www.timeanddate.com/news/time/antarctica-new-times.html
# From Steffen Thorsen (2010-03-10):
# We got these changes from the Australian Antarctic Division: ...
@@ -62,7 +64,7 @@
# - Mawson station stays on UTC+5.
#
# Background:
-# http://www.timeanddate.com/news/time/antartica-time-changes-2010.html
+# https://www.timeanddate.com/news/time/antartica-time-changes-2010.html
# From Steffen Thorsen (2016-10-28):
# Australian Antarctica Division informed us that Casey changed time
@@ -75,7 +77,8 @@
8:00 - +08 2011 Oct 28 2:00
11:00 - +11 2012 Feb 21 17:00u
8:00 - +08 2016 Oct 22
- 11:00 - +11
+ 11:00 - +11 2018 Mar 11 4:00
+ 8:00 - +08
Zone Antarctica/Davis 0 - -00 1957 Jan 13
7:00 - +07 1964 Nov
0 - -00 1969 Feb
@@ -145,7 +148,7 @@
#
# year-round base in the main continent
# Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11
-# <http://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05)
+# <https://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05)
#
# Another base at Port-Martin, 50km east, began operation in 1947.
# It was destroyed by fire on 1952-01-14.
diff --git a/tools/java/org/unicode/cldr/util/data/asia b/tools/java/org/unicode/cldr/util/data/asia
index 35774c6..3165203 100644
--- a/tools/java/org/unicode/cldr/util/data/asia
+++ b/tools/java/org/unicode/cldr/util/data/asia
@@ -1,3 +1,5 @@
+# tzdb data for Asia and environs
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
@@ -6,7 +8,7 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2017-01-13):
+# From Paul Eggert (2018-06-19):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
@@ -26,7 +28,7 @@
#
# For data circa 1899, a common source is:
# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
-# http://www.jstor.org/stable/1774359
+# https://www.jstor.org/stable/1774359
#
# For Russian data circa 1919, a source is:
# Byalokoz EL. New Counting of Time in Russia since July 1, 1919.
@@ -35,7 +37,8 @@
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
#
-# The following alphabetic abbreviations appear in these tables:
+# The following alphabetic abbreviations appear in these tables
+# (corrections are welcome):
# std dst
# LMT Local Mean Time
# 2:00 EET EEST Eastern European Time
@@ -44,13 +47,15 @@
# 7:00 WIB west Indonesia (Waktu Indonesia Barat)
# 8:00 WITA central Indonesia (Waktu Indonesia Tengah)
# 8:00 CST China
+# 8:00 PST PDT* Philippine Standard Time
# 8:30 KST KDT Korea when at +0830
# 9:00 WIT east Indonesia (Waktu Indonesia Timur)
# 9:00 JST JDT Japan
# 9:00 KST KDT Korea when at +09
# 9:30 ACST Australian Central Standard Time
+# *I invented the abbreviation PDT; see "Philippines" below.
# Otherwise, these tables typically use numeric abbreviations like +03
-# and +0330 for integer hour and minute UTC offsets. Although earlier
+# and +0330 for integer hour and minute UT offsets. Although earlier
# editions invented alphabetic time zone abbreviations for every
# offset, this did not reflect common practice.
#
@@ -69,14 +74,14 @@
Rule EUAsia 1981 max - Mar lastSun 1:00u 1:00 S
Rule EUAsia 1979 1995 - Sep lastSun 1:00u 0 -
Rule EUAsia 1996 max - Oct lastSun 1:00u 0 -
-Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 S
+Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 -
Rule E-EurAsia 1979 1995 - Sep lastSun 0:00 0 -
Rule E-EurAsia 1996 max - Oct lastSun 0:00 0 -
-Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 S
+Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 -
Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 -
Rule RussiaAsia 1984 1995 - Sep lastSun 2:00s 0 -
-Rule RussiaAsia 1985 2011 - Mar lastSun 2:00s 1:00 S
-Rule RussiaAsia 1996 2011 - Oct lastSun 2:00s 0 -
+Rule RussiaAsia 1985 2010 - Mar lastSun 2:00s 1:00 -
+Rule RussiaAsia 1996 2010 - Oct lastSun 2:00s 0 -
# Afghanistan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -109,13 +114,17 @@
# or
# (brief)
# http://www.worldtimezone.com/dst_news/dst_news_armenia03.html
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Armenia 2011 only - Mar lastSun 2:00s 1:00 -
+Rule Armenia 2011 only - Oct lastSun 2:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
3:00 - +03 1957 Mar
4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s
3:00 RussiaAsia +03/+04 1995 Sep 24 2:00s
4:00 - +04 1997
- 4:00 RussiaAsia +04/+05
+ 4:00 RussiaAsia +04/+05 2011
+ 4:00 Armenia +04/+05
# Azerbaijan
@@ -127,12 +136,12 @@
# From Steffen Thorsen (2016-03-17):
# ... the Azerbaijani Cabinet of Ministers has cancelled switching to
# daylight saving time....
-# http://www.azernews.az/azerbaijan/94137.html
+# https://www.azernews.az/azerbaijan/94137.html
# http://vestnikkavkaza.net/news/Azerbaijani-Cabinet-of-Ministers-cancels-daylight-saving-time.html
# http://en.apa.az/xeber_azerbaijan_abolishes_daylight_savings_ti_240862.html
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Azer 1997 2015 - Mar lastSun 4:00 1:00 S
+Rule Azer 1997 2015 - Mar lastSun 4:00 1:00 -
Rule Azer 1997 2015 - Oct lastSun 5:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Baku 3:19:24 - LMT 1924 May 2
@@ -168,11 +177,11 @@
# the 19th and 20th, and they have not set the end date yet.
#
# Some sources:
-# http://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601
+# https://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601
# http://bdnews24.com/details.php?id=85889&cid=2
#
# Our wrap-up:
-# http://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html
+# https://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html
# From A. N. M. Kamrus Saadat (2009-06-15):
# Finally we've got the official mail regarding DST start time where DST start
@@ -219,7 +228,7 @@
# http://www.worldtimezone.com/dst_news/dst_news_bangladesh06.html
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Dhaka 2009 only - Jun 19 23:00 1:00 S
+Rule Dhaka 2009 only - Jun 19 23:00 1:00 -
Rule Dhaka 2009 only - Dec 31 24:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -258,9 +267,15 @@
# Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon.
+# From Paul Eggert (2017-04-20):
+# Page 27 of Reed & Low (cited for Asia/Kolkata) says "Rangoon local time is
+# used upon the railways and telegraphs of Burma, and is 6h. 24m. 47s. ahead
+# of Greenwich." This refers to the period before Burma's transition to +0630,
+# a transition for which Shanks is the only source.
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Asia/Yangon 6:24:40 - LMT 1880 # or Rangoon
- 6:24:40 - RMT 1920 # Rangoon Mean Time?
+Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon
+ 6:24:47 - RMT 1920 # Rangoon local time
6:30 - +0630 1942 May
9:00 - +09 1945 May 3
6:30 - +0630
@@ -271,6 +286,29 @@
# China
+# From Paul Eggert (2018-10-02):
+# The following comes from Table 1 of:
+# Li Yu. Research on the daylight saving movement in 1940s Shanghai.
+# Nanjing Journal of Social Sciences. 2014;(2):144-50.
+# http://oversea.cnki.net/kns55/detail.aspx?dbname=CJFD2014&filename=NJSH201402020
+# The table lists dates only; I am guessing 00:00 and 24:00 transition times.
+# Also, the table lists the planned end of DST in 1949, but the corresponding
+# zone line cuts this off on May 28, when the Communists took power.
+#
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Shang 1940 only - Jun 1 0:00 1:00 D
+Rule Shang 1940 only - Oct 12 24:00 0 S
+Rule Shang 1941 only - Mar 15 0:00 1:00 D
+Rule Shang 1941 only - Nov 1 24:00 0 S
+Rule Shang 1942 only - Jan 31 0:00 1:00 D
+Rule Shang 1945 only - Sep 1 24:00 0 S
+Rule Shang 1946 only - May 15 0:00 1:00 D
+Rule Shang 1946 only - Sep 30 24:00 0 S
+Rule Shang 1947 only - Apr 15 0:00 1:00 D
+Rule Shang 1947 only - Oct 31 24:00 0 S
+Rule Shang 1948 1949 - May 1 0:00 1:00 D
+Rule Shang 1948 1949 - Sep 30 24:00 0 S #plan
+
# From Guy Harris:
# People's Republic of China. Yes, they really have only one time zone.
@@ -297,18 +335,33 @@
# time - sort of", Los Angeles Times, 1986-05-05 ... [says] that China began
# observing daylight saving time in 1986.
-# From Paul Eggert (2014-06-30):
-# Shanks & Pottenger have China switching to a single time zone in 1980, but
-# this doesn't seem to be correct. They also write that China observed summer
-# DST from 1986 through 1991, which seems to match the above commentary, so
-# go with them for DST rules as follows:
+# From P Chan (2018-05-07):
+# The start and end time of DST in China [from 1986 on] should be 2:00
+# (i.e. 2:00 to 3:00 at the start and 2:00 to 1:00 at the end)....
+# Government notices about summer time:
+#
+# 1986-04-12 http://www.zj.gov.cn/attach/zfgb/198608.pdf p.21-22
+# (To establish summer time from 1986. On 4 May, set the clocks ahead one hour
+# at 2 am. On 14 September, set the clocks backward one hour at 2 am.)
+#
+# 1987-02-15 http://www.gov.cn/gongbao/shuju/1987/gwyb198703.pdf p.114
+# (Summer time in 1987 to start from 12 April until 13 September)
+#
+# 1987-09-09 http://www.gov.cn/gongbao/shuju/1987/gwyb198721.pdf p.709
+# (From 1988, summer time to start from 2 am of the first Sunday of mid-April
+# until 2 am of the first Sunday of mid-September)
+#
+# 1992-03-03 http://www.gov.cn/gongbao/shuju/1992/gwyb199205.pdf p.152
+# (To suspend summer time from 1992)
+#
+# The first page of People's Daily on 12 April 1988 stating that summer time
+# to begin on 17 April.
+# http://data.people.com.cn/pic/101p/1988/04/1988041201.jpg
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Shang 1940 only - Jun 3 0:00 1:00 D
-Rule Shang 1940 1941 - Oct 1 0:00 0 S
-Rule Shang 1941 only - Mar 16 0:00 1:00 D
-Rule PRC 1986 only - May 4 0:00 1:00 D
-Rule PRC 1986 1991 - Sep Sun>=11 0:00 0 S
-Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00 D
+Rule PRC 1986 only - May 4 2:00 1:00 D
+Rule PRC 1986 1991 - Sep Sun>=11 2:00 0 S
+Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D
# From Anthony Fok (2001-12-20):
# BTW, I did some research on-line and found some info regarding these five
@@ -317,7 +370,7 @@
#
# From Jesper Nørgaard Welen (2006-07-14):
# I have investigated the timezones around 1970 on the
-# http://www.astro.com/atlas site [with provinces and county
+# https://www.astro.com/atlas site [with provinces and county
# boundaries summarized below].... A few other exceptions were two
# counties on the Sichuan side of the Xizang-Sichuan border,
# counties Dege and Baiyu which lies on the Sichuan side and are
@@ -330,10 +383,11 @@
# Alois Treindl kindly sent me translations of the following two sources:
#
# (1)
-# Guo Qingsheng (National Time-Service Center, CAS, Xi'an 710600, China)
+# Guo Qing-sheng (National Time-Service Center, CAS, Xi'an 710600, China)
# Beijing Time at the Beginning of the PRC
# China Historical Materials of Science and Technology
-# (Zhongguo ke ji shi liao, 中国科技史料), Vol. 24, No. 1 (2003)
+# (Zhongguo ke ji shi liao, 中国科技史料). 2003;24(1):5-9.
+# http://oversea.cnki.net/kcms/detail/detail.aspx?filename=ZGKS200301000&dbname=CJFD2003
# It gives evidence that at the beginning of the PRC, Beijing time was
# officially apparent solar time! However, Guo also says that the
# evidence is dubious, as the relevant institute of astronomy had not
@@ -469,7 +523,7 @@
# From David Cochrane (2014-03-26):
# Just a confirmation that Ürümqi time was implemented in Ürümqi on 1 Feb 1986:
-# http://content.time.com/time/magazine/article/0,9171,960684,00.html
+# https://content.time.com/time/magazine/article/0,9171,960684,00.html
# From Luther Ma (2014-04-22):
# I have interviewed numerous people of various nationalities and from
@@ -510,7 +564,7 @@
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Beijing time, used throughout China; represented by Shanghai.
Zone Asia/Shanghai 8:05:43 - LMT 1901
- 8:00 Shang C%sT 1949
+ 8:00 Shang C%sT 1949 May 28
8:00 PRC C%sT
# Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi
# / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.)
@@ -532,12 +586,82 @@
# obtained from
# http://www.hko.gov.hk/gts/time/Summertime.htm
-# From Arthur David Olson (2009-10-28):
+# From Phake Nick (2018-10-27):
+# According to Singaporean newspaper
+# http://eresources.nlb.gov.sg/newspapers/Digitised/Article/singfreepresswk19041102-1.2.37
+# the day that Hong Kong start using GMT+8 should be Oct 30, 1904.
+#
+# From Paul Eggert (2018-11-17):
+# Hong Kong had a time ball near the Marine Police Station, Tsim Sha Tsui.
+# "The ball was raised manually each day and dropped at exactly 1pm
+# (except on Sundays and Government holidays)."
+# Dyson AD. From Time Ball to Atomic Clock. Hong Kong Government. 1983.
+# <https://www.hko.gov.hk/publica/gen_pub/timeball_atomic_clock.pdf>
+# "From 1904 October 30 the time-ball at Hong Kong has been dropped by order
+# of the Governor of the Colony at 17h 0m 0s G.M.T., which is 23m 18s.14 in
+# advance of 1h 0m 0s of Hong Kong mean time."
+# Hollis HP. Universal Time, Longitudes, and Geodesy. Mon Not R Astron Soc.
+# 1905-02-10;65(4):405-6. https://doi.org/10.1093/mnras/65.4.382
+#
+# From Joseph Myers (2018-11-18):
+# An astronomer before 1925 referring to GMT would have been using the old
+# astronomical convention where the day started at noon, not midnight.
+#
+# From Steve Allen (2018-11-17):
+# Meteorological Observations made at the Hongkong Observatory in the year 1904
+# page 4 <https://books.google.com/books?id=kgw5AQAAMAAJ&pg=RA4-PA4>
+# ... the log of drop times in Table II shows that on Sunday 1904-10-30 the
+# ball was dropped. So that looks like a special case drop for the sake
+# of broadcasting the new local time.
+#
+# From Phake Nick (2018-11-18):
+# According to The Hong Kong Weekly Press, 1904-10-29, p.324, the
+# governor of Hong Kong at the time stated that "We are further desired to
+# make it known that the change will be effected by firing the gun and by the
+# dropping of the Ball at 23min. 18sec. before one."
+# From Paul Eggert (2018-11-18):
+# See <https://mmis.hkpl.gov.hk> for this; unfortunately Flash is required.
+
+# From Phake Nick (2018-10-26):
+# I went to check microfilm records stored at Hong Kong Public Library....
+# on September 30 1941, according to Ta Kung Pao (Hong Kong edition), it was
+# stated that fallback would occur on the next day (the 1st)'s "03:00 am (Hong
+# Kong Time 04:00 am)" and the clock will fall back for a half hour. (03:00
+# probably refer to the time commonly used in mainland China at the time given
+# the paper's background) ... the sunrise/sunset time given by South China
+# Morning Post for October 1st was indeed moved by half an hour compares to
+# before. After that, in December, the battle to capture Hong Kong started and
+# the library doesn't seems to have any record stored about press during that
+# period of time. Some media resumed publication soon after that within the
+# same month, but there were not much information about time there. Later they
+# started including a radio program guide when they restored radio service,
+# explicitly mentioning it use Tokyo standard time, and later added a note
+# saying it's half an hour ahead of the old Hong Kong standard time, and it
+# also seems to indicate that Hong Kong was not using GMT+8 when it was
+# captured by Japan.
+#
+# Image of related sections on newspaper:
+# * 1941-09-30, Ta Kung Pao (Hong Kong), "Winter Time start tomorrow".
+# https://i.imgur.com/6waY51Z.jpg (Chinese)
+# * 1941-09-29, South China Morning Post, Information on sunrise/sunset
+# time and other things for September 30 and October 1.
+# https://i.imgur.com/kCiUR78.jpg
+# * 1942-02-05. The Hong Kong News, Radio Program Guide.
+# https://i.imgur.com/eVvDMzS.jpg
+# * 1941-06-14. Hong Kong Daily Press, Daylight Saving from 3am Tomorrow.
+# https://i.imgur.com/05KkvtC.png
+# * 1941-09-30, Hong Kong Daily Press, Winter Time Warning.
+# https://i.imgur.com/dge4kFJ.png
+# Also, the Liberation day of Hong Kong after WWII which British rule
+# over the territory resumed was August 30, 1945, which I think should
+# be the termination date for the use of JST in the territory....
+
+# From Paul Eggert (2018-11-17):
# Here are the dates given at
-# http://www.hko.gov.hk/gts/time/Summertime.htm
-# as of 2009-10-28:
+# https://www.hko.gov.hk/gts/time/Summertime.htm
+# as of 2014-06-19:
# Year Period
-# 1941 1 Apr to 30 Sep
+# 1941 15 Jun to 30 Sep
# 1942 Whole year
# 1943 Whole year
# 1944 Whole year
@@ -548,7 +672,7 @@
# 1949 3 Apr to 30 Oct
# 1950 2 Apr to 29 Oct
# 1951 1 Apr to 28 Oct
-# 1952 6 Apr to 25 Oct
+# 1952 6 Apr to 2 Nov
# 1953 5 Apr to 1 Nov
# 1954 21 Mar to 31 Oct
# 1955 20 Mar to 6 Nov
@@ -577,25 +701,25 @@
# 1978 Nil
# 1979 13 May to 21 Oct
# 1980 to Now Nil
-# The page does not give start or end times of day.
-# The page does not give a start date for 1942.
-# The page does not givw an end date for 1945.
-# The Japanese occupation of Hong Kong began on 1941-12-25.
-# The Japanese surrender of Hong Kong was signed 1945-09-15.
-# For lack of anything better, use start of those days as the transition times.
+# The page does not give times of day for transitions,
+# or dates for the 1942 and 1945 transitions.
+# The Japanese occupation of Hong Kong began 1941-12-25.
+# The Japanese surrender of Hong Kong was signed 1945-09-16; see:
+# Heaver S. The days after the Pacific war ended: unsettling times
+# in Hong Kong. Post Magazine. 2016-06-13.
+# https://www.scmp.com/magazines/post-magazine/article/1852990/days-after-pacific-war-ended-unsettling-times-hong-kong
+# For lack of anything better, use start of those days as the
+# transition times.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule HK 1941 only - Apr 1 3:30 1:00 S
-Rule HK 1941 only - Sep 30 3:30 0 -
Rule HK 1946 only - Apr 20 3:30 1:00 S
Rule HK 1946 only - Dec 1 3:30 0 -
Rule HK 1947 only - Apr 13 3:30 1:00 S
Rule HK 1947 only - Dec 30 3:30 0 -
Rule HK 1948 only - May 2 3:30 1:00 S
Rule HK 1948 1951 - Oct lastSun 3:30 0 -
-Rule HK 1952 only - Oct 25 3:30 0 -
+Rule HK 1952 1953 - Nov Sun>=1 3:30 0 -
Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S
-Rule HK 1953 only - Nov 1 3:30 0 -
Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S
Rule HK 1954 only - Oct 31 3:30 0 -
Rule HK 1955 1964 - Nov Sun>=1 3:30 0 -
@@ -605,9 +729,11 @@
Rule HK 1979 only - May Sun>=8 3:30 1:00 S
Rule HK 1979 only - Oct Sun>=16 3:30 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30
- 8:00 HK HK%sT 1941 Dec 25
- 9:00 - JST 1945 Sep 15
+Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42
+ 8:00 - HKT 1941 Jun 15 3:30
+ 8:00 1:00 HKST 1941 Oct 1 4:00
+ 8:30 - HKT 1941 Dec 25
+ 9:00 - JST 1945 Sep 16
8:00 HK HK%sT
###############################################################################
@@ -626,7 +752,7 @@
# (both in Okinawa) adopt the Western Standard Time which is based on
# 120E. The adoption began from Jan 1, 1896. The original text can be
# found on Wikisource:
-# http://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
+# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
# ... This could be the first adoption of time zone in Taiwan, because
# during the Qing Dynasty, it seems that there was no time zone
# declared officially.
@@ -637,17 +763,17 @@
# time", in which abolished the adoption of Western Standard Time in
# western islands (listed above), which means the whole Japan
# territory, including later occupations, adopt Japan Central Time
-# (UTC+9). The adoption began on Oct 1, 1937. The original text can
+# (UT+9). The adoption began on Oct 1, 1937. The original text can
# be found on Wikisource:
-# http://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件
+# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件
#
-# That is, the time zone of Taipei switched to UTC+9 on Oct 1, 1937.
+# That is, the time zone of Taipei switched to UT+9 on Oct 1, 1937.
# From Yu-Cheng Chuang (2014-07-02):
-# I've found more evidence about when the time zone was switched from UTC+9
-# back to UTC+8 after WW2. I believe it was on Sep 21, 1945. In a document
+# I've found more evidence about when the time zone was switched from UT+9
+# back to UT+8 after WW2. I believe it was on Sep 21, 1945. In a document
# during Japanese era [1] in which the officer told the staff to change time
-# zone back to Western Standard Time (UTC+8) on Sep 21. And in another
+# zone back to Western Standard Time (UT+8) on Sep 21. And in another
# history page of National Cheng Kung University [2], on Sep 21 there is a
# note "from today, switch back to Western Standard Time". From these two
# materials, I believe that the time zone change happened on Sep 21. And
@@ -739,23 +865,140 @@
8:00 Taiwan C%sT
# Macau (Macao, Aomen)
+#
+# From P Chan (2018-05-10):
+# * LegisMac
+# http://legismac.safp.gov.mo/legismac/descqry/Descqry.jsf?lang=pt
+# A database for searching titles of legal documents of Macau in
+# Chinese and Portuguese. The term "HORÁRIO DE VERÃO" can be used for
+# searching decrees about summer time.
+# * Archives of Macao
+# http://www.archives.gov.mo/en/bo/
+# It contains images of old official gazettes.
+# * The Macao Meteorological and Geophysical Bureau have a page listing the
+# summer time history. But it is not complete and has some mistakes.
+# http://www.smg.gov.mo/smg/geophysics/e_t_Summer%20Time.htm
+# Macau adopted GMT+8 on 30 Oct 1904 to follow Hong Kong. Clocks were
+# advanced by 25 minutes and 50 seconds. Which means the LMT used was
+# +7:34:10. As stated in the "Portaria No. 204" dated 21 October 1904
+# and published in the Official Gazette on 29 October 1904.
+# http://igallery.icm.gov.mo/Images/Archives/BO/MO_AH_PUB_BO_1904_10/MO_AH_PUB_BO_1904_10_00025_Grey.JPG
+#
+# Therefore the 1911 decree of Portugal did not change time in Macau.
+#
+# From LegisMac, here is a list of decrees that changed the time ...
+# [Decree Gazette-no. date; titles omitted in this quotation]
+# DIL 732 BOCM 51 1941.12.20
+# DIL 764 BOCM 9S 1942.04.30
+# DIL 781 BOCM 21 1942.10.10
+# PT 3434 BOCM 8S 1943.04.17
+# PT 3504 BOCM 20 1943.09.25
+# PT 3843 BOCM 39 1945.09.29
+# PT 3961 BOCM 17 1946.04.27
+# PT 4026 BOCM 39 1946.09.28
+# PT 4153 BOCM 16 1947.04.10
+# PT 4271 BOCM 48 1947.11.29
+# PT 4374 BOCM 18 1948.05.01
+# PT 4465 BOCM 44 1948.10.30
+# PT 4590 BOCM 14 1949.04.02
+# PT 4666 BOCM 44 1949.10.29
+# PT 4771 BOCM 12 1950.03.25
+# PT 4838 BOCM 43 1950.10.28
+# PT 4946 BOCM 12 1951.03.24
+# PT 5025 BO 43 1951.10.27
+# PT 5149 BO 14 1952.04.05
+# PT 5251 BO 43 1952.10.25
+# PT 5366 BO 13 1953.03.28
+# PT 5444 BO 44 1953.10.31
+# PT 5540 BO 12 1954.03.20
+# PT 5589 BO 44 1954.10.30
+# PT 5676 BO 12 1955.03.19
+# PT 5739 BO 45 1955.11.05
+# PT 5823 BO 11 1956.03.17
+# PT 5891 BO 44 1956.11.03
+# PT 5981 BO 12 1957.03.23
+# PT 6064 BO 43 1957.10.26
+# PT 6172 BO 12 1958.03.22
+# PT 6243 BO 43 1958.10.25
+# PT 6341 BO 12 1959.03.21
+# PT 6411 BO 43 1959.10.24
+# PT 6514 BO 11 1960.03.12
+# PT 6584 BO 44 1960.10.29
+# PT 6721 BO 10 1961.03.11
+# PT 6815 BO 43 1961.10.28
+# PT 6947 BO 10 1962.03.10
+# PT 7080 BO 43 1962.10.27
+# PT 7218 BO 12 1963.03.23
+# PT 7340 BO 43 1963.10.26
+# PT 7491 BO 11 1964.03.14
+# PT 7664 BO 43 1964.10.24
+# PT 7846 BO 15 1965.04.10
+# PT 7979 BO 42 1965.10.16
+# PT 8146 BO 15 1966.04.09
+# PT 8252 BO 41 1966.10.08
+# PT 8429 BO 15 1967.04.15
+# PT 8540 BO 41 1967.10.14
+# PT 8735 BO 15 1968.04.13
+# PT 8860 BO 41 1968.10.12
+# PT 9035 BO 16 1969.04.19
+# PT 9156 BO 42 1969.10.18
+# PT 9328 BO 15 1970.04.11
+# PT 9418 BO 41 1970.10.10
+# PT 9587 BO 14 1971.04.03
+# PT 9702 BO 41 1971.10.09
+# PT 38-A/72 BO 14 1972.04.01
+# PT 126-A/72 BO 41 1972.10.07
+# PT 61/73 BO 14 1973.04.07
+# PT 182/73 BO 40 1973.10.06
+# PT 282/73 BO 51 1973.12.22
+# PT 177/74 BO 41 1974.10.12
+# PT 51/75 BO 15 1975.04.12
+# PT 173/75 BO 41 1975.10.11
+# PT 67/76/M BO 14 1976.04.03
+# PT 169/76/M BO 41 1976.10.09
+# PT 78/79/M BO 19 1979.05.12
+# PT 166/79/M BO 42 1979.10.20
+# Note that DIL 732 does not belong to "HORÁRIO DE VERÃO" according to
+# LegisMac.... Note that between 1942 and 1945, the time switched
+# between GMT+9 and GMT+10. Also in 1965 and 1965 the DST ended at 2:30am.
+
+# From Paul Eggert (2018-05-10):
+# The 1904 decree says that Macau changed from the meridian of
+# Fortaleza do Monte, presumably the basis for the 7:34:10 for LMT.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 D
-Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 S
-Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 D
-Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 D
-Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 D
-Rule Macau 1965 only - Oct 31 0:00 0 S
-Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 D
-Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 S
-Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 D
-Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 S
-Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 S
-Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 D
-Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 D
-Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 S
+Rule Macau 1942 1943 - Apr 30 23:00 1:00 -
+Rule Macau 1942 only - Nov 17 23:00 0 -
+Rule Macau 1943 only - Sep 30 23:00 0 S
+Rule Macau 1946 only - Apr 30 23:00s 1:00 D
+Rule Macau 1946 only - Sep 30 23:00s 0 S
+Rule Macau 1947 only - Apr 19 23:00s 1:00 D
+Rule Macau 1947 only - Nov 30 23:00s 0 S
+Rule Macau 1948 only - May 2 23:00s 1:00 D
+Rule Macau 1948 only - Oct 31 23:00s 0 S
+Rule Macau 1949 1950 - Apr Sat>=1 23:00s 1:00 D
+Rule Macau 1949 1950 - Oct lastSat 23:00s 0 S
+Rule Macau 1951 only - Mar 31 23:00s 1:00 D
+Rule Macau 1951 only - Oct 28 23:00s 0 S
+Rule Macau 1952 1953 - Apr Sat>=1 23:00s 1:00 D
+Rule Macau 1952 only - Nov 1 23:00s 0 S
+Rule Macau 1953 1954 - Oct lastSat 23:00s 0 S
+Rule Macau 1954 1956 - Mar Sat>=17 23:00s 1:00 D
+Rule Macau 1955 only - Nov 5 23:00s 0 S
+Rule Macau 1956 1964 - Nov Sun>=1 03:30 0 S
+Rule Macau 1957 1964 - Mar Sun>=18 03:30 1:00 D
+Rule Macau 1965 1973 - Apr Sun>=16 03:30 1:00 D
+Rule Macau 1965 1966 - Oct Sun>=16 02:30 0 S
+Rule Macau 1967 1976 - Oct Sun>=16 03:30 0 S
+Rule Macau 1973 only - Dec 30 03:30 1:00 D
+Rule Macau 1975 1976 - Apr Sun>=16 03:30 1:00 D
+Rule Macau 1979 only - May 13 03:30 1:00 D
+Rule Macau 1979 only - Oct Sun>=16 03:30 0 S
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Asia/Macau 7:34:20 - LMT 1912 Jan 1
+Zone Asia/Macau 7:34:10 - LMT 1904 Oct 30
+ 8:00 - CST 1941 Dec 21 23:00
+ 9:00 Macau +09/+10 1945 Sep 30 24:00
8:00 Macau C%sT
@@ -775,6 +1018,12 @@
# Looks like the time zone split in Cyprus went through last night.
# http://cyprus-mail.com/2016/10/30/cyprus-new-division-two-time-zones-now-reality/
+# From Paul Eggert (2017-10-18):
+# Northern Cyprus will reinstate winter time on October 29, thus
+# staying in sync with the rest of Cyprus. See: Anastasiou A.
+# Cyprus to remain united in time. Cyprus Mail 2017-10-17.
+# https://cyprus-mail.com/2017/10/17/cyprus-remain-united-time/
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Cyprus 1975 only - Apr 13 0:00 1:00 S
Rule Cyprus 1975 only - Oct 12 0:00 0 -
@@ -792,7 +1041,8 @@
Zone Asia/Famagusta 2:15:48 - LMT 1921 Nov 14
2:00 Cyprus EE%sT 1998 Sep
2:00 EUAsia EE%sT 2016 Sep 8
- 3:00 - +03
+ 3:00 - +03 2017 Oct 29 1:00u
+ 2:00 EUAsia EE%sT
# Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72.
# However, for various reasons many users expect to find it under Europe.
@@ -852,7 +1102,7 @@
# From João Carrascalão, brother of the former governor of East Timor, in
# East Timor may be late for its millennium
-# <http://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31):
+# <https://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31):
# Portugal tried to change the time forward in 1974 because the sun
# rises too early but the suggestion raised a lot of problems with the
# Timorese and I still don't think it would work today because it
@@ -879,22 +1129,73 @@
# India
+# British astronomer Henry Park Hollis disliked India Standard Time's offset:
+# "A new time system has been proposed for India, Further India, and Burmah.
+# The scheme suggested is that the times of the meridians 5½ and 6½ hours
+# east of Greenwich should be adopted in these territories. No reason is
+# given why hourly meridians five hours and six hours east should not be
+# chosen; a plan which would bring the time of India into harmony with
+# that of almost the whole of the civilised world."
+# Hollis HP. Universal Time, Longitudes, and Geodesy. Mon Not R Astron Soc.
+# 1905-02-10;65(4):405-6. https://doi.org/10.1093/mnras/65.4.382
+
# From Ian P. Beacock, in "A brief history of (modern) time", The Atlantic
-# http://www.theatlantic.com/technology/archive/2015/12/the-creation-of-modern-time/421419/
+# https://www.theatlantic.com/technology/archive/2015/12/the-creation-of-modern-time/421419/
# (2015-12-22):
# In January 1906, several thousand cotton-mill workers rioted on the
# outskirts of Bombay.... They were protesting the proposed abolition of
# local time in favor of Indian Standard Time.... Journalists called this
# dispute the "Battle of the Clocks." It lasted nearly half a century.
+# From Paul Eggert (2017-04-20):
+# Good luck trying to nail down old timekeeping records in India.
+# "... in the nineteenth century ... Madras Observatory took its magnetic
+# measurements on Göttingen time, its meteorological measurements on Madras
+# (local) time, dropped its time ball on Greenwich (ocean navigator's) time,
+# and distributed civil (local time)." -- Bartky IR. Selling the true time:
+# 19th-century timekeeping in america. Stanford U Press (2000), 247 note 19.
+# "A more potent cause of resistance to the general adoption of the present
+# standard time lies in the fact that it is Madras time. The citizen of
+# Bombay, proud of being 'primus in Indis' and of Calcutta, equally proud of
+# his city being the Capital of India, and - for a part of the year - the Seat
+# of the Supreme Government, alike look down on Madras, and refuse to change
+# the time they are using, for that of what they regard as a benighted
+# Presidency; while Madras, having for long given the standard time to the
+# rest of India, would resist the adoption of any other Indian standard in its
+# place." -- Oldham RD. On Time in India: a suggestion for its improvement.
+# Proceedings of the Asiatic Society of Bengal (April 1899), 49-55.
+#
+# "In 1870 ... Madras time - 'now used by the telegraph and regulated from the
+# only government observatory' - was suggested as a standard railway time,
+# first to be adopted on the Great Indian Peninsular Railway (GIPR)....
+# Calcutta, Bombay, and Karachi, were to be allowed to continue with their
+# local time for civil purposes." - Prasad R. Tracks of Change: Railways and
+# Everyday Life in Colonial India. Cambridge University Press (2016), 145.
+#
+# Reed S, Low F. The Indian Year Book 1936-37. Bennett, Coleman, pp 27-8.
+# https://archive.org/details/in.ernet.dli.2015.282212
+# This lists +052110 as Madras local time used in railways, and says that on
+# 1906-01-01 railways and telegraphs in India switched to +0530. Some
+# municipalities retained their former time, and the time in Calcutta
+# continued to depend on whether you were at the railway station or at
+# government offices. Government time was at +055320 (according to Shanks) or
+# at +0554 (according to the Indian Year Book). Railway time is more
+# appropriate for our purposes, as it was better documented, it is what we do
+# elsewhere (e.g., Europe/London before 1880), and after 1906 it was
+# consistent in the region now identified by Asia/Kolkata. So, use railway
+# time for 1870-1941. Shanks is our only (and dubious) source for the
+# 1941-1945 data.
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Asia/Kolkata 5:53:28 - LMT 1880 # Kolkata
- 5:53:20 - HMT 1941 Oct # Howrah Mean Time?
- 6:30 - +0630 1942 May 15
+Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata
+ 5:53:20 - HMT 1870 # Howrah Mean Time?
+ 5:21:10 - MMT 1906 Jan 1 # Madras local time
+ 5:30 - IST 1941 Oct
+ 5:30 1:00 +0630 1942 May 15
5:30 - IST 1942 Sep
5:30 1:00 +0630 1945 Oct 15
5:30 - IST
-# The following are like Asia/Kolkata:
+# Since 1970 the following are like Asia/Kolkata:
# Andaman Is
# Lakshadweep (Laccadive, Minicoy and Amindivi Is)
# Nicobar Is
@@ -1008,12 +1309,65 @@
# leap year calculation involved. There has never been any serious
# plan to change that law....
#
-# From Paul Eggert (2006-03-22):
+# From Paul Eggert (2018-11-30):
# Go with Shanks & Pottenger before Sept. 1991, and with Pournader thereafter.
-# I used Ed Reingold's cal-persia in GNU Emacs 21.2 to check Persian dates,
-# stopping after 2037 when 32-bit time_t's overflow.
-# That cal-persia used Birashk's approximation, which disagrees with the solar
-# calendar predictions for the year 2025, so I corrected those dates by hand.
+# I used the following code in GNU Emacs 26.1 to generate the "Rule Iran"
+# lines from 2008 through 2087. Emacs 26.1 uses Ed Reingold's
+# cal-persia implementation of Birashk's approximation, which in the
+# 2008-2087 range disagrees with the the astronomical Persian calendar
+# for Persian years 1404 (Gregorian 2025) and 1437 (Gregorian 2058),
+# so the following code special-case those years. See Table 15.1, page 264, of:
+# Edward M. Reingold and Nachum Dershowitz, Calendrical Calculations:
+# The Ultimate Edition, Cambridge University Press (2018).
+# https://www.cambridge.org/fr/academic/subjects/computer-science/computing-general-interest/calendrical-calculations-ultimate-edition-4th-edition
+# Page 258, footnote 2, of this book says there is some dispute over what will
+# happen in 2091 (and some other years after that), so this code
+# stops in 2087, as 2088 and 2089 agree with the "max" rule below.
+# (cl-loop
+# initially (require 'cal-persia)
+# with first-persian-year = 1387
+# with last-persian-year = 1466
+# ;; Exceptional years in the above range,
+# ;; from Reingold & Dershowitz Table 15.1, page 264:
+# with exceptional-persian-years = '(1404 1437)
+# with range-start = nil
+# for persian-year from first-persian-year to last-persian-year
+# do
+# (let*
+# ((exceptional-year-offset
+# (if (member persian-year exceptional-persian-years) 1 0))
+# (beg-dst-absolute
+# (+ (calendar-persian-to-absolute (list 1 1 persian-year))
+# exceptional-year-offset))
+# (end-dst-absolute
+# (+ (calendar-persian-to-absolute (list 6 30 persian-year))
+# exceptional-year-offset))
+# (next-year-beg-dst-absolute
+# (+ (calendar-persian-to-absolute (list 1 1 (1+ persian-year)))
+# (if (member (1+ persian-year) exceptional-persian-years) 1 0)))
+# (beg-dst (calendar-gregorian-from-absolute beg-dst-absolute))
+# (end-dst (calendar-gregorian-from-absolute end-dst-absolute))
+# (next-year-beg-dst (calendar-gregorian-from-absolute
+# next-year-beg-dst-absolute))
+# (year (calendar-extract-year beg-dst))
+# (range-end (if range-start year "only")))
+# (setq range-start (or range-start year))
+# (when (or (/= (calendar-extract-day beg-dst)
+# (calendar-extract-day next-year-beg-dst))
+# (= persian-year last-persian-year))
+# (insert
+# (format
+# "Rule\tIran\t%d\t%s\t-\t%s\t%2d\t24:00\t1:00\t-\n"
+# range-start range-end
+# (calendar-month-name (calendar-extract-month beg-dst) t)
+# (calendar-extract-day beg-dst)))
+# (insert
+# (format
+# "Rule\tIran\t%d\t%s\t-\t%s\t%2d\t24:00\t0\t-\n"
+# range-start range-end
+# (calendar-month-name (calendar-extract-month end-dst) t)
+# (calendar-extract-day end-dst)))
+# (setq range-start nil))))
#
# From Oscar van Vlijmen (2005-03-30), writing about future
# discrepancies between cal-persia and the Iranian calendar:
@@ -1036,7 +1390,7 @@
# From Reuters (2007-09-16), with a heads-up from Jesper Nørgaard Welen:
# ... the Guardian Council ... approved a law on Sunday to re-introduce
# daylight saving time ...
-# http://uk.reuters.com/article/oilRpt/idUKBLA65048420070916
+# https://uk.reuters.com/article/oilRpt/idUKBLA65048420070916
#
# From Roozbeh Pournader (2007-11-05):
# This is quoted from Official Gazette of the Islamic Republic of
@@ -1048,61 +1402,113 @@
# thirtieth day of Shahrivar.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Iran 1978 1980 - Mar 21 0:00 1:00 D
-Rule Iran 1978 only - Oct 21 0:00 0 S
-Rule Iran 1979 only - Sep 19 0:00 0 S
-Rule Iran 1980 only - Sep 23 0:00 0 S
-Rule Iran 1991 only - May 3 0:00 1:00 D
-Rule Iran 1992 1995 - Mar 22 0:00 1:00 D
-Rule Iran 1991 1995 - Sep 22 0:00 0 S
-Rule Iran 1996 only - Mar 21 0:00 1:00 D
-Rule Iran 1996 only - Sep 21 0:00 0 S
-Rule Iran 1997 1999 - Mar 22 0:00 1:00 D
-Rule Iran 1997 1999 - Sep 22 0:00 0 S
-Rule Iran 2000 only - Mar 21 0:00 1:00 D
-Rule Iran 2000 only - Sep 21 0:00 0 S
-Rule Iran 2001 2003 - Mar 22 0:00 1:00 D
-Rule Iran 2001 2003 - Sep 22 0:00 0 S
-Rule Iran 2004 only - Mar 21 0:00 1:00 D
-Rule Iran 2004 only - Sep 21 0:00 0 S
-Rule Iran 2005 only - Mar 22 0:00 1:00 D
-Rule Iran 2005 only - Sep 22 0:00 0 S
-Rule Iran 2008 only - Mar 21 0:00 1:00 D
-Rule Iran 2008 only - Sep 21 0:00 0 S
-Rule Iran 2009 2011 - Mar 22 0:00 1:00 D
-Rule Iran 2009 2011 - Sep 22 0:00 0 S
-Rule Iran 2012 only - Mar 21 0:00 1:00 D
-Rule Iran 2012 only - Sep 21 0:00 0 S
-Rule Iran 2013 2015 - Mar 22 0:00 1:00 D
-Rule Iran 2013 2015 - Sep 22 0:00 0 S
-Rule Iran 2016 only - Mar 21 0:00 1:00 D
-Rule Iran 2016 only - Sep 21 0:00 0 S
-Rule Iran 2017 2019 - Mar 22 0:00 1:00 D
-Rule Iran 2017 2019 - Sep 22 0:00 0 S
-Rule Iran 2020 only - Mar 21 0:00 1:00 D
-Rule Iran 2020 only - Sep 21 0:00 0 S
-Rule Iran 2021 2023 - Mar 22 0:00 1:00 D
-Rule Iran 2021 2023 - Sep 22 0:00 0 S
-Rule Iran 2024 only - Mar 21 0:00 1:00 D
-Rule Iran 2024 only - Sep 21 0:00 0 S
-Rule Iran 2025 2027 - Mar 22 0:00 1:00 D
-Rule Iran 2025 2027 - Sep 22 0:00 0 S
-Rule Iran 2028 2029 - Mar 21 0:00 1:00 D
-Rule Iran 2028 2029 - Sep 21 0:00 0 S
-Rule Iran 2030 2031 - Mar 22 0:00 1:00 D
-Rule Iran 2030 2031 - Sep 22 0:00 0 S
-Rule Iran 2032 2033 - Mar 21 0:00 1:00 D
-Rule Iran 2032 2033 - Sep 21 0:00 0 S
-Rule Iran 2034 2035 - Mar 22 0:00 1:00 D
-Rule Iran 2034 2035 - Sep 22 0:00 0 S
+Rule Iran 1978 1980 - Mar 20 24:00 1:00 -
+Rule Iran 1978 only - Oct 20 24:00 0 -
+Rule Iran 1979 only - Sep 18 24:00 0 -
+Rule Iran 1980 only - Sep 22 24:00 0 -
+Rule Iran 1991 only - May 2 24:00 1:00 -
+Rule Iran 1992 1995 - Mar 21 24:00 1:00 -
+Rule Iran 1991 1995 - Sep 21 24:00 0 -
+Rule Iran 1996 only - Mar 20 24:00 1:00 -
+Rule Iran 1996 only - Sep 20 24:00 0 -
+Rule Iran 1997 1999 - Mar 21 24:00 1:00 -
+Rule Iran 1997 1999 - Sep 21 24:00 0 -
+Rule Iran 2000 only - Mar 20 24:00 1:00 -
+Rule Iran 2000 only - Sep 20 24:00 0 -
+Rule Iran 2001 2003 - Mar 21 24:00 1:00 -
+Rule Iran 2001 2003 - Sep 21 24:00 0 -
+Rule Iran 2004 only - Mar 20 24:00 1:00 -
+Rule Iran 2004 only - Sep 20 24:00 0 -
+Rule Iran 2005 only - Mar 21 24:00 1:00 -
+Rule Iran 2005 only - Sep 21 24:00 0 -
+Rule Iran 2008 only - Mar 20 24:00 1:00 -
+Rule Iran 2008 only - Sep 20 24:00 0 -
+Rule Iran 2009 2011 - Mar 21 24:00 1:00 -
+Rule Iran 2009 2011 - Sep 21 24:00 0 -
+Rule Iran 2012 only - Mar 20 24:00 1:00 -
+Rule Iran 2012 only - Sep 20 24:00 0 -
+Rule Iran 2013 2015 - Mar 21 24:00 1:00 -
+Rule Iran 2013 2015 - Sep 21 24:00 0 -
+Rule Iran 2016 only - Mar 20 24:00 1:00 -
+Rule Iran 2016 only - Sep 20 24:00 0 -
+Rule Iran 2017 2019 - Mar 21 24:00 1:00 -
+Rule Iran 2017 2019 - Sep 21 24:00 0 -
+Rule Iran 2020 only - Mar 20 24:00 1:00 -
+Rule Iran 2020 only - Sep 20 24:00 0 -
+Rule Iran 2021 2023 - Mar 21 24:00 1:00 -
+Rule Iran 2021 2023 - Sep 21 24:00 0 -
+Rule Iran 2024 only - Mar 20 24:00 1:00 -
+Rule Iran 2024 only - Sep 20 24:00 0 -
+Rule Iran 2025 2027 - Mar 21 24:00 1:00 -
+Rule Iran 2025 2027 - Sep 21 24:00 0 -
+Rule Iran 2028 2029 - Mar 20 24:00 1:00 -
+Rule Iran 2028 2029 - Sep 20 24:00 0 -
+Rule Iran 2030 2031 - Mar 21 24:00 1:00 -
+Rule Iran 2030 2031 - Sep 21 24:00 0 -
+Rule Iran 2032 2033 - Mar 20 24:00 1:00 -
+Rule Iran 2032 2033 - Sep 20 24:00 0 -
+Rule Iran 2034 2035 - Mar 21 24:00 1:00 -
+Rule Iran 2034 2035 - Sep 21 24:00 0 -
+Rule Iran 2036 2037 - Mar 20 24:00 1:00 -
+Rule Iran 2036 2037 - Sep 20 24:00 0 -
+Rule Iran 2038 2039 - Mar 21 24:00 1:00 -
+Rule Iran 2038 2039 - Sep 21 24:00 0 -
+Rule Iran 2040 2041 - Mar 20 24:00 1:00 -
+Rule Iran 2040 2041 - Sep 20 24:00 0 -
+Rule Iran 2042 2043 - Mar 21 24:00 1:00 -
+Rule Iran 2042 2043 - Sep 21 24:00 0 -
+Rule Iran 2044 2045 - Mar 20 24:00 1:00 -
+Rule Iran 2044 2045 - Sep 20 24:00 0 -
+Rule Iran 2046 2047 - Mar 21 24:00 1:00 -
+Rule Iran 2046 2047 - Sep 21 24:00 0 -
+Rule Iran 2048 2049 - Mar 20 24:00 1:00 -
+Rule Iran 2048 2049 - Sep 20 24:00 0 -
+Rule Iran 2050 2051 - Mar 21 24:00 1:00 -
+Rule Iran 2050 2051 - Sep 21 24:00 0 -
+Rule Iran 2052 2053 - Mar 20 24:00 1:00 -
+Rule Iran 2052 2053 - Sep 20 24:00 0 -
+Rule Iran 2054 2055 - Mar 21 24:00 1:00 -
+Rule Iran 2054 2055 - Sep 21 24:00 0 -
+Rule Iran 2056 2057 - Mar 20 24:00 1:00 -
+Rule Iran 2056 2057 - Sep 20 24:00 0 -
+Rule Iran 2058 2059 - Mar 21 24:00 1:00 -
+Rule Iran 2058 2059 - Sep 21 24:00 0 -
+Rule Iran 2060 2062 - Mar 20 24:00 1:00 -
+Rule Iran 2060 2062 - Sep 20 24:00 0 -
+Rule Iran 2063 only - Mar 21 24:00 1:00 -
+Rule Iran 2063 only - Sep 21 24:00 0 -
+Rule Iran 2064 2066 - Mar 20 24:00 1:00 -
+Rule Iran 2064 2066 - Sep 20 24:00 0 -
+Rule Iran 2067 only - Mar 21 24:00 1:00 -
+Rule Iran 2067 only - Sep 21 24:00 0 -
+Rule Iran 2068 2070 - Mar 20 24:00 1:00 -
+Rule Iran 2068 2070 - Sep 20 24:00 0 -
+Rule Iran 2071 only - Mar 21 24:00 1:00 -
+Rule Iran 2071 only - Sep 21 24:00 0 -
+Rule Iran 2072 2074 - Mar 20 24:00 1:00 -
+Rule Iran 2072 2074 - Sep 20 24:00 0 -
+Rule Iran 2075 only - Mar 21 24:00 1:00 -
+Rule Iran 2075 only - Sep 21 24:00 0 -
+Rule Iran 2076 2078 - Mar 20 24:00 1:00 -
+Rule Iran 2076 2078 - Sep 20 24:00 0 -
+Rule Iran 2079 only - Mar 21 24:00 1:00 -
+Rule Iran 2079 only - Sep 21 24:00 0 -
+Rule Iran 2080 2082 - Mar 20 24:00 1:00 -
+Rule Iran 2080 2082 - Sep 20 24:00 0 -
+Rule Iran 2083 only - Mar 21 24:00 1:00 -
+Rule Iran 2083 only - Sep 21 24:00 0 -
+Rule Iran 2084 2086 - Mar 20 24:00 1:00 -
+Rule Iran 2084 2086 - Sep 20 24:00 0 -
+Rule Iran 2087 only - Mar 21 24:00 1:00 -
+Rule Iran 2087 only - Sep 21 24:00 0 -
#
-# The following rules are approximations starting in the year 2038.
-# These are the best post-2037 approximations available, given the
-# restrictions of a single rule using a Gregorian-based data format.
+# The following rules are approximations starting in the year 2088.
+# These are the best post-2088 approximations available, given the
+# restrictions of a single rule using ordinary Gregorian dates.
# At some point this table will need to be extended, though quite
# possibly Iran will change the rules first.
-Rule Iran 2036 max - Mar 21 0:00 1:00 D
-Rule Iran 2036 max - Sep 21 0:00 0 S
+Rule Iran 2088 max - Mar 20 24:00 1:00 -
+Rule Iran 2088 max - Sep 20 24:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Tehran 3:25:44 - LMT 1916
@@ -1135,20 +1541,20 @@
# http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10
#
# We have published a short article in English about the change:
-# http://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html
+# https://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Iraq 1982 only - May 1 0:00 1:00 D
-Rule Iraq 1982 1984 - Oct 1 0:00 0 S
-Rule Iraq 1983 only - Mar 31 0:00 1:00 D
-Rule Iraq 1984 1985 - Apr 1 0:00 1:00 D
-Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 S
-Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 D
+Rule Iraq 1982 only - May 1 0:00 1:00 -
+Rule Iraq 1982 1984 - Oct 1 0:00 0 -
+Rule Iraq 1983 only - Mar 31 0:00 1:00 -
+Rule Iraq 1984 1985 - Apr 1 0:00 1:00 -
+Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 -
+Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 -
# IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the ':01' is a typo.
# Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this.
#
-Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 D
-Rule Iraq 1991 2007 - Oct 1 3:00s 0 S
+Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 -
+Rule Iraq 1991 2007 - Oct 1 3:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Baghdad 2:57:40 - LMT 1890
2:57:36 - BMT 1918 # Baghdad Mean Time?
@@ -1406,22 +1812,41 @@
# of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who
# wanted to keep it.)
-# From Paul Eggert (2006-03-22):
-# Shanks & Pottenger write that DST in Japan during those years was as follows:
+# From Takayuki Nikai (2018-01-19):
+# The source of information is Japanese law.
+# http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00219480428029.htm
+# http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00719500331039.htm
+# ... In summary, it is written as follows. From 24:00 on the first Saturday
+# in May, until 0:00 on the day after the second Saturday in September.
+
+# From Phake Nick (2018-09-27):
+# [T]he webpage authored by National Astronomical Observatory of Japan
+# https://eco.mtk.nao.ac.jp/koyomi/wiki/BBFEB9EF2FB2C6BBFEB9EF.html
+# ... mentioned that using Showa 23 (year 1948) as example, 13pm of September
+# 11 in summer time will equal to 0am of September 12 in standard time.
+# It cited a document issued by the Liaison Office which briefly existed
+# during the postwar period of Japan, where the detail on implementation
+# of the summer time is described in the document.
+# https://eco.mtk.nao.ac.jp/koyomi/wiki/BBFEB9EF2FB2C6BBFEB9EFB2C6BBFEB9EFA4CEBCC2BBDCA4CBA4C4A4A4A4C6.pdf
+# The text in the document do instruct a fall back to occur at
+# September 11, 13pm in summer time, while ordinary citizens can
+# change the clock before they sleep.
+#
+# From Paul Eggert (2018-09-27):
+# This instruction is equivalent to "Sat>=8 25:00", so use that. zic treats
+# it like "Sun>=9 01:00", which is not quite the same but is the best we can
+# do in any POSIX or C platform. The "25:00" assumes zic from 2007 or later,
+# which should be safe now.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Japan 1948 only - May Sun>=1 2:00 1:00 D
-Rule Japan 1948 1951 - Sep Sat>=8 2:00 0 S
-Rule Japan 1949 only - Apr Sun>=1 2:00 1:00 D
-Rule Japan 1950 1951 - May Sun>=1 2:00 1:00 D
-# but the only locations using it (for birth certificates, presumably, since
-# their audience is astrologers) were US military bases. For now, assume
-# that for most purposes daylight-saving time was observed; otherwise, what
-# would have been the point of the 1951 poll?
+Rule Japan 1948 only - May Sat>=1 24:00 1:00 D
+Rule Japan 1948 1951 - Sep Sat>=8 25:00 0 S
+Rule Japan 1949 only - Apr Sat>=1 24:00 1:00 D
+Rule Japan 1950 1951 - May Sat>=1 24:00 1:00 D
# From Hideyuki Suzuki (1998-11-09):
# 'Tokyo' usually stands for the former location of Tokyo Astronomical
-# Observatory: 139 degrees 44' 40.90" E (9h 18m 58.727s),
-# 35 degrees 39' 16.0" N.
+# Observatory: 139° 44' 40.90" E (9h 18m 58.727s), 35° 39' 16.0" N.
# This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996'
# edited by National Astronomical Observatory of Japan....
# JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST).
@@ -1429,10 +1854,10 @@
# From Hideyuki Suzuki (1998-11-16):
# The ordinance No. 51 (1886) established "standard time" in Japan,
-# which stands for the time on 135 degrees E.
+# which stands for the time on 135° E.
# In the ordinance No. 167 (1895), "standard time" was renamed to "central
# standard time". And the same ordinance also established "western standard
-# time", which stands for the time on 120 degrees E.... But "western standard
+# time", which stands for the time on 120° E.... But "western standard
# time" was abolished in the ordinance No. 529 (1937). In the ordinance No.
# 167, there is no mention regarding for what place western standard time is
# standard....
@@ -1443,17 +1868,19 @@
# From Yu-Cheng Chuang (2013-07-12):
# ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause
# about standard time" ... The adoption began from Jan 1, 1896.
-# http://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
+# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
#
# ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which
# means the whole Japan territory, including later occupations, adopt Japan
-# Central Time (UTC+9). The adoption began on Oct 1, 1937.
-# http://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件
+# Central Time (UT+9). The adoption began on Oct 1, 1937.
+# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
9:00 Japan J%sT
-# Since 1938, all Japanese possessions have been like Asia/Tokyo.
+# Since 1938, all Japanese possessions have been like Asia/Tokyo,
+# except that Truk (Chuuk), Ponape (Pohnpei), and Jaluit (Kosrae) did not
+# switch from +10 to +09 until 1941-04-01; see the 'australasia' file.
# Jordan
#
@@ -1510,7 +1937,7 @@
# Official, in Arabic:
# http://www.petra.gov.jo/public_news/Nws_NewsDetails.aspx?Menu_ID=&Site_Id=2&lang=1&NewsID=133230&CatID=14
# ... Our background/permalink about it
-# http://www.timeanddate.com/news/time/jordan-reverses-dst-decision.html
+# https://www.timeanddate.com/news/time/jordan-reverses-dst-decision.html
# ...
# http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?lang=2&site_id=1&NewsID=133313&Type=P
# ... says midnight for the coming one and 1:00 for the ones in the future
@@ -1743,8 +2170,10 @@
# and in Byalokoz) lists Ural river (plus 10 versts on its left bank) in
# the third time belt (before 1930 this means +03).
-# From Paul Eggert (2016-12-06):
-# The tables below reflect Golosunov's remarks, with exceptions as noted.
+# From Alexander Konzurovski (2018-12-20):
+# Qyzyolrda Region (Asia/Qyzylorda) is changing its time zone from
+# UTC+6 to UTC+5 effective December 21st, 2018. The legal document is
+# located here: http://adilet.zan.kz/rus/docs/P1800000817 (russian language).
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
#
@@ -1758,8 +2187,6 @@
6:00 RussiaAsia +06/+07 2004 Oct 31 2:00s
6:00 - +06
# Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.) (KZ-KZY)
-# This currently includes Qostanay (aka Kostanay, Kustanay) (KZ-KUS);
-# see comments below.
Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2
4:00 - +04 1930 Jun 21
5:00 - +05 1981 Apr 1
@@ -1770,21 +2197,22 @@
5:00 RussiaAsia +05/+06 1992 Jan 19 2:00s
6:00 RussiaAsia +06/+07 1992 Mar 29 2:00s
5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s
- 6:00 - +06
-# The following zone is like Asia/Qyzylorda except for being one
-# hour earlier from 1991-09-29 to 1992-03-29. The 1991/2 rules for
-# Qostanay are unclear partly because of the 1997 Turgai
-# reorganization, so this zone is commented out for now.
-#Zone Asia/Qostanay 4:14:20 - LMT 1924 May 2
-# 4:00 - +04 1930 Jun 21
-# 5:00 - +05 1981 Apr 1
-# 5:00 1:00 +06 1981 Oct 1
-# 6:00 - +06 1982 Apr 1
-# 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s
-# 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s
-# 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s
-# 6:00 - +06
+ 6:00 - +06 2018 Dec 21 0:00
+ 5:00 - +05
#
+# Qostanay (aka Kostanay, Kustanay) (KZ-KUS)
+# The 1991/2 rules are unclear partly because of the 1997 Turgai
+# reorganization.
+Zone Asia/Qostanay 4:14:28 - LMT 1924 May 2
+ 4:00 - +04 1930 Jun 21
+ 5:00 - +05 1981 Apr 1
+ 5:00 1:00 +06 1981 Oct 1
+ 6:00 - +06 1982 Apr 1
+ 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s
+ 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s
+ 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s
+ 6:00 - +06
+
# Aqtöbe (aka Aktobe, formerly Aktyubinsk) (KZ-AKT)
Zone Asia/Aqtobe 3:48:40 - LMT 1924 May 2
4:00 - +04 1930 Jun 21
@@ -1797,7 +2225,7 @@
5:00 - +05
# Mangghystaū (KZ-MAN)
# Aqtau was not founded until 1963, but it represents an inhabited region,
-# so include time stamps before 1963.
+# so include timestamps before 1963.
Zone Asia/Aqtau 3:21:04 - LMT 1924 May 2
4:00 - +04 1930 Jun 21
5:00 - +05 1981 Oct 1
@@ -1845,9 +2273,9 @@
# From 2005-08-12 our GMT-offset is +6, w/o any daylight saving.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 S
+Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 -
Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 -
-Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 S
+Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 -
Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2
@@ -1868,9 +2296,9 @@
# between 1987 and 1988 ...
# From Sanghyuk Jung (2014-10-29):
-# http://mm.icann.org/pipermail/tz/2014-October/021830.html
+# https://mm.icann.org/pipermail/tz/2014-October/021830.html
# According to the Korean Wikipedia
-# http://ko.wikipedia.org/wiki/한국_표준시
+# https://ko.wikipedia.org/wiki/한국_표준시
# [oldid=12896437 2014-09-04 08:03 UTC]
# DST in Republic of Korea was as follows.... And I checked old
# newspapers in Korean, all articles correspond with data in Wikipedia.
@@ -1878,21 +2306,43 @@
# started at June 1 in that year. For another example, the article in
# 1988 said that DST started at 2:00 AM in that year.
+# From Phake Nick (2018-10-27):
+# 1. According to official announcement from Korean government, the DST end
+# date in South Korea should be
+# 1955-09-08 without specifying time
+# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027977557
+# 1956-09-29 without specifying time
+# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027978341
+# 1957-09-21 24 o'clock
+# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027979690#3
+# 1958-09-20 24 o'clock
+# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027981189
+# 1959-09-19 24 o'clock
+# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027982974#2
+# 1960-09-17 24 o'clock
+# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0028044104
+# ...
+# 2.... https://namu.wiki/w/대한민국%20표준시 ... [says]
+# when Korea was using GMT+8:30 as standard time, the international
+# aviation/marine/meteorological industry in the country refused to
+# follow and continued to use GMT+9:00 for interoperability.
+
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule ROK 1948 only - Jun 1 0:00 1:00 D
-Rule ROK 1948 only - Sep 13 0:00 0 S
-Rule ROK 1949 only - Apr 3 0:00 1:00 D
-Rule ROK 1949 1951 - Sep Sun>=8 0:00 0 S
-Rule ROK 1950 only - Apr 1 0:00 1:00 D
-Rule ROK 1951 only - May 6 0:00 1:00 D
-Rule ROK 1955 only - May 5 0:00 1:00 D
-Rule ROK 1955 only - Sep 9 0:00 0 S
-Rule ROK 1956 only - May 20 0:00 1:00 D
-Rule ROK 1956 only - Sep 30 0:00 0 S
-Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D
-Rule ROK 1957 1960 - Sep Sun>=18 0:00 0 S
-Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D
-Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S
+Rule ROK 1948 only - Jun 1 0:00 1:00 D
+Rule ROK 1948 only - Sep 12 24:00 0 S
+Rule ROK 1949 only - Apr 3 0:00 1:00 D
+Rule ROK 1949 1951 - Sep Sat>=7 24:00 0 S
+Rule ROK 1950 only - Apr 1 0:00 1:00 D
+Rule ROK 1951 only - May 6 0:00 1:00 D
+Rule ROK 1955 only - May 5 0:00 1:00 D
+Rule ROK 1955 only - Sep 8 24:00 0 S
+Rule ROK 1956 only - May 20 0:00 1:00 D
+Rule ROK 1956 only - Sep 29 24:00 0 S
+Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D
+Rule ROK 1957 1960 - Sep Sat>=17 24:00 0 S
+Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D
+Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S
# From Paul Eggert (2016-08-23):
# The Korean Wikipedia entry gives the following sources for UT offsets:
@@ -1925,6 +2375,23 @@
# There is no common English-language abbreviation for this time zone.
# Use KST, as that's what we already use for 1954-1961 in ROK.
+# From Kang Seonghoon (2018-04-29):
+# North Korea will revert its time zone from UTC+8:30 (PYT; Pyongyang
+# Time) back to UTC+9 (KST; Korea Standard Time).
+#
+# From Seo Sanghyeon (2018-04-30):
+# Rodong Sinmun 2018-04-30 announced Pyongyang Time transition plan.
+# https://www.nknews.org/kcna/wp-content/uploads/sites/5/2018/04/rodong-2018-04-30.pdf
+# ... the transition date is 2018-05-05 ... Citation should be Decree
+# No. 2232 of April 30, 2018, of the Presidium of the Supreme People's
+# Assembly, as published in Rodong Sinmun.
+# From Tim Parenti (2018-04-29):
+# It appears to be the front page story at the top in the right-most column.
+#
+# From Paul Eggert (2018-05-04):
+# The BBC reported that the transition was from 23:30 to 24:00 today.
+# https://www.bbc.com/news/world-asia-44010705
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1
8:30 - KST 1912 Jan 1
@@ -1936,7 +2403,8 @@
8:30 - KST 1912 Jan 1
9:00 - JST 1945 Aug 24
9:00 - KST 2015 Aug 15 00:00
- 8:30 - KST
+ 8:30 - KST 2018 May 4 23:30
+ 9:00 - KST
###############################################################################
@@ -1979,7 +2447,7 @@
# Malaysia
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 TS # one-Third Summer
+Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 -
Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
#
# peninsular Malaysia
@@ -2008,8 +2476,8 @@
# Maldives
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Indian/Maldives 4:54:00 - LMT 1880 # Male
- 4:54:00 - MMT 1960 # Male Mean Time
+Zone Indian/Maldives 4:54:00 - LMT 1880 # Malé
+ 4:54:00 - MMT 1960 # Malé Mean Time
5:00 - +05
# Mongolia
@@ -2092,7 +2560,7 @@
# +08:00 instead. Different sources appear to disagree with the tz
# database on this, e.g.:
#
-# http://www.timeanddate.com/worldclock/city.html?n=1026
+# https://www.timeanddate.com/worldclock/city.html?n=1026
# http://www.worldtimeserver.com/current_time_in_MN.aspx
#
# both say GMT+08:00.
@@ -2124,7 +2592,7 @@
# http://zasag.mn/news/view/8969
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Mongol 1983 1984 - Apr 1 0:00 1:00 S
+Rule Mongol 1983 1984 - Apr 1 0:00 1:00 -
Rule Mongol 1983 only - Oct 1 0:00 0 -
# Shanks & Pottenger and IATA SSIM say 1990s switches occurred at 00:00,
# but McDow says the 2001 switches occurred at 02:00. Also, IATA SSIM
@@ -2141,13 +2609,13 @@
# Mongolian Government meeting has concluded today to cancel daylight
# saving time adoption in Mongolia. Source: http://zasag.mn/news/view/16192
-Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 S
+Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 -
Rule Mongol 1984 1998 - Sep lastSun 0:00 0 -
# IATA SSIM (1999-09) says Mongolia no longer observes DST.
-Rule Mongol 2001 only - Apr lastSat 2:00 1:00 S
+Rule Mongol 2001 only - Apr lastSat 2:00 1:00 -
Rule Mongol 2001 2006 - Sep lastSat 2:00 0 -
-Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 S
-Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 S
+Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 -
+Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 -
Rule Mongol 2015 2016 - Sep lastSat 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -2222,7 +2690,7 @@
# help reduce load shedding by approving the closure of commercial centres at
# 9pm and moving clocks forward by one hour for the next three months. ...."
#
-# http://www.worldtimezone.net/dst_news/dst_news_pakistan01.html
+# http://www.worldtimezone.com/dst_news/dst_news_pakistan01.html
# http://www.dailytimes.com.pk/default.asp?page=2008%5C05%5C15%5Cstory_15-5-2008_pg1_4
# From Arthur David Olson (2008-05-19):
@@ -2288,7 +2756,7 @@
#
# We have confirmed this year's end date with both with the Ministry of
# Water and Power and the Pakistan Electric Power Company:
-# http://www.timeanddate.com/news/time/pakistan-ends-dst09.html
+# https://www.timeanddate.com/news/time/pakistan-ends-dst09.html
# From Christoph Göhre (2009-10-01):
# [T]he German Consulate General in Karachi reported me today that Pakistan
@@ -2470,7 +2938,7 @@
#
# We are not sure if Gaza will do the same, last year they had a different
# end date, we will keep this page updated:
-# http://www.timeanddate.com/news/time/westbank-gaza-dst-2009.html
+# https://www.timeanddate.com/news/time/westbank-gaza-dst-2009.html
# From Alexander Krivenyshev (2009-09-02):
# Seems that Gaza Strip will go back to Winter Time same date as West Bank.
@@ -2508,7 +2976,7 @@
# the clocks were set back one hour at 2010-08-11 00:00:00 local time in
# Gaza and the West Bank.
# Some more background info:
-# http://www.timeanddate.com/news/time/westbank-gaza-end-dst-2010.html
+# https://www.timeanddate.com/news/time/westbank-gaza-end-dst-2010.html
# From Steffen Thorsen (2011-08-26):
# Gaza and the West Bank did go back to standard time in the beginning of
@@ -2518,7 +2986,7 @@
#
# http://www.maannews.net/eng/ViewDetails.aspx?ID=416217
# Additional info:
-# http://www.timeanddate.com/news/time/palestine-dst-2011.html
+# https://www.timeanddate.com/news/time/palestine-dst-2011.html
# From Alexander Krivenyshev (2011-08-27):
# According to the article in The Jerusalem Post:
@@ -2528,7 +2996,7 @@
# The Hamas government said on Saturday that it won't observe summertime after
# the Muslim feast of Id al-Fitr, which begins on Tuesday..."
# ...
-# http://www.jpost.com/MiddleEast/Article.aspx?id=235650
+# https://www.jpost.com/MiddleEast/Article.aspx?id=235650
# http://www.worldtimezone.com/dst_news/dst_news_gazastrip05.html
# The rules for Egypt are stolen from the 'africa' file.
@@ -2549,7 +3017,7 @@
# http://safa.ps/details/news/74352/%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-%D8%A8%D8%A7%D9%84%D8%B6%D9%81%D8%A9-%D9%88%D8%BA%D8%B2%D8%A9-%D9%84%D9%8A%D9%84%D8%A9-%D8%A7%D9%84%D8%AC%D9%85%D8%B9%D8%A9.html
#
# Our brief summary:
-# http://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html
+# https://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html
# From Steffen Thorsen (2013-03-26):
# The following news sources tells that Palestine will "start daylight saving
@@ -2569,11 +3037,11 @@
# From Steffen Thorsen (2015-03-03):
# Sources such as http://www.alquds.com/news/article/view/id/548257
-# and http://www.raya.ps/ar/news/890705.html say Palestine areas will
+# and https://www.raya.ps/ar/news/890705.html say Palestine areas will
# start DST on 2015-03-28 00:00 which is one day later than expected.
#
# From Paul Eggert (2015-03-03):
-# http://www.timeanddate.com/time/change/west-bank/ramallah?year=2014
+# https://www.timeanddate.com/time/change/west-bank/ramallah?year=2014
# says that the fall 2014 transition was Oct 23 at 24:00.
# From Hannah Kreitem (2016-03-09):
@@ -2581,9 +3049,6 @@
# [Google translation]: "The Council also decided to start daylight
# saving in Palestine as of one o'clock on Saturday morning,
# 2016-03-26, to provide the clock 60 minutes ahead."
-#
-# From Paul Eggert (2016-03-12):
-# Predict spring transitions on March's last Saturday at 01:00 from now on.
# From Sharef Mustafa (2016-10-19):
# [T]he Palestinian cabinet decision (Mar 8th 2016) published on
@@ -2597,8 +3062,18 @@
#
# From Paul Eggert (2016-10-19):
# It's also consistent with predictions in the following URLs today:
-# http://www.timeanddate.com/time/change/gaza-strip/gaza
-# http://www.timeanddate.com/time/change/west-bank/hebron
+# https://www.timeanddate.com/time/change/gaza-strip/gaza
+# https://www.timeanddate.com/time/change/west-bank/hebron
+
+# From Sharef Mustafa (2018-03-16):
+# Palestine summer time will start on Mar 24th 2018 by advancing the
+# clock by 60 minutes as per Palestinian cabinet decision published on
+# the official website, though the decree did not specify the exact
+# time of the time shift.
+# http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a42ab7-ee23-435a-b9c8-a4f7e81f3817
+#
+# From Paul Eggert (2018-03-16):
+# For 2016 on, predict spring transitions on March's fourth Saturday at 01:00.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule EgyptAsia 1957 only - May 10 0:00 1:00 S
@@ -2629,7 +3104,7 @@
Rule Palestine 2013 only - Sep Fri>=21 0:00 0 -
Rule Palestine 2014 2015 - Oct Fri>=21 0:00 0 -
Rule Palestine 2015 only - Mar lastFri 24:00 1:00 S
-Rule Palestine 2016 max - Mar lastSat 1:00 1:00 S
+Rule Palestine 2016 max - Mar Sat>=22 1:00 1:00 S
Rule Palestine 2016 max - Oct lastSat 1:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -2657,11 +3132,16 @@
# no information
# Philippines
+
+# From Paul Eggert (2018-11-18):
+# The Spanish initially used American (west-of-Greenwich) time.
+# It is unknown what time Manila kept when the British occupied it from
+# 1762-10-06 through 1764-04; for now assume it kept American time.
# On 1844-08-16, Narciso Clavería, governor-general of the
# Philippines, issued a proclamation announcing that 1844-12-30 was to
# be immediately followed by 1845-01-01; see R.H. van Gent's
# History of the International Date Line
-# http://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm
+# https://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm
# The rest of the data entries are from Shanks & Pottenger.
# From Jesper Nørgaard Welen (2006-04-26):
@@ -2678,19 +3158,35 @@
# Philippine Star 2014-08-05
# http://www.philstar.com/headlines/2014/08/05/1354152/pnoy-urged-declare-use-daylight-saving-time
+# From Paul Goyette (2018-06-15):
+# In the Philippines, there is a national law, Republic Act No. 10535
+# which declares the official time here as "Philippine Standard Time".
+# The act [1] even specifies use of PST as the abbreviation, although
+# the FAQ provided by PAGASA [2] uses the "acronym PhST to distinguish
+# it from the Pacific Standard Time (PST)."
+# [1] http://www.officialgazette.gov.ph/2013/05/15/republic-act-no-10535/
+# [2] https://www1.pagasa.dost.gov.ph/index.php/astronomy/philippine-standard-time#republic-act-10535
+#
+# From Paul Eggert (2018-06-19):
+# I surveyed recent news reports, and my impression is that "PST" is
+# more popular among reliable English-language news sources. This is
+# not just a measure of Google hit counts: it's also the sizes and
+# influence of the sources. There is no current abbreviation for DST,
+# so use "PDT", the usual American style.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Phil 1936 only - Nov 1 0:00 1:00 S
-Rule Phil 1937 only - Feb 1 0:00 0 -
-Rule Phil 1954 only - Apr 12 0:00 1:00 S
-Rule Phil 1954 only - Jul 1 0:00 0 -
-Rule Phil 1978 only - Mar 22 0:00 1:00 S
-Rule Phil 1978 only - Sep 21 0:00 0 -
+Rule Phil 1936 only - Nov 1 0:00 1:00 D
+Rule Phil 1937 only - Feb 1 0:00 0 S
+Rule Phil 1954 only - Apr 12 0:00 1:00 D
+Rule Phil 1954 only - Jul 1 0:00 0 S
+Rule Phil 1978 only - Mar 22 0:00 1:00 D
+Rule Phil 1978 only - Sep 21 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
8:04:00 - LMT 1899 May 11
- 8:00 Phil +08/+09 1942 May
- 9:00 - +09 1944 Nov
- 8:00 Phil +08/+09
+ 8:00 Phil P%sT 1942 May
+ 9:00 - JST 1944 Nov
+ 8:00 Phil P%sT
# Qatar
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -2701,15 +3197,34 @@
# Saudi Arabia
#
-# From Paul Eggert (2014-07-15):
+# From Paul Eggert (2018-08-29):
# Time in Saudi Arabia and other countries in the Arabian peninsula was not
-# standardized until relatively recently; we don't know when, and possibly it
+# standardized until 1968 or so; we don't know exactly when, and possibly it
# has never been made official. Richard P Hunt, in "Islam city yielding to
# modern times", New York Times (1961-04-09), p 20, wrote that only airlines
# observed standard time, and that people in Jeddah mostly observed quasi-solar
# time, doing so by setting their watches at sunrise to 6 o'clock (or to 12
# o'clock for "Arab" time).
#
+# Timekeeping differed depending on who you were and which part of Saudi
+# Arabia you were in. In 1969, Elias Antar wrote that although a common
+# practice had been to set one's watch to 12:00 (i.e., midnight) at sunset -
+# which meant that the time on one side of a mountain could differ greatly from
+# the time on the other side - many foreigners set their watches to 6pm
+# instead, while airlines instead used UTC +03 (except in Dhahran, where they
+# used UTC +04), Aramco used UTC +03 with DST, and the Trans-Arabian Pipe Line
+# Company used Aramco time in eastern Saudi Arabia and airline time in western.
+# (The American Military Aid Advisory Group used plain UTC.) Antar writes,
+# "A man named Higgins, so the story goes, used to run a local power
+# station. One day, the whole thing became too much for Higgins and he
+# assembled his staff and laid down the law. 'I've had enough of this,' he
+# shrieked. 'It is now 12 o'clock Higgins Time, and from now on this station is
+# going to run on Higgins Time.' And so, until last year, it did." See:
+# Antar E. Dinner at When? Saudi Aramco World, 1969 March/April. 2-3.
+# http://archive.aramcoworld.com/issue/196902/dinner.at.when.htm
+# Also see: Antar EN. Arabian flying is confusing.
+# Port Angeles (WA) Evening News. 1965-03-10. page 3.
+#
# The TZ database cannot represent quasi-solar time; airline time is the best
# we can do. The 1946 foreign air news digest of the U.S. Civil Aeronautics
# Board (OCLC 42299995) reported that the "... Arabian Government, inaugurated
@@ -2719,7 +3234,8 @@
#
# Shanks & Pottenger also state that until 1968-05-01 Saudi Arabia had two
# time zones; the other zone, at UT +04, was in the far eastern part of
-# the country. Ignore this, as it's before our 1970 cutoff.
+# the country. Presumably this is documenting airline time. Ignore this,
+# as it's before our 1970 cutoff.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14
@@ -2925,7 +3441,7 @@
# We have not found any sources saying anything about when DST ends this year.
#
# Our summary
-# http://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html
+# https://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html
# From Steffen Thorsen (2009-10-27):
# The Syrian Arab News Network on 2009-09-29 reported that Syria will
@@ -2952,7 +3468,7 @@
# http://www.sana.sy/ara/2/2012/03/26/408215.htm
#
# Our brief summary:
-# http://www.timeanddate.com/news/time/syria-dst-2012.html
+# https://www.timeanddate.com/news/time/syria-dst-2012.html
# From Arthur David Olson (2012-03-27):
# Assume last Friday in March going forward XXX.
@@ -3035,13 +3551,13 @@
# is quoted verbatim in:
# http://www.thoigian.com.vn/?mPage=P80D01
# is translated by Brian Inglis in:
-# http://mm.icann.org/pipermail/tz/2014-October/021654.html
+# https://mm.icann.org/pipermail/tz/2014-October/021654.html
# and is the basis for the information below.
#
# The 1906 transition was effective July 1 and standardized Indochina to
-# Phù Liễn Observatory, legally 104 deg. 17'17" east of Paris.
+# Phù Liễn Observatory, legally 104° 17' 17" east of Paris.
# It's unclear whether this meant legal Paris Mean Time (00:09:21) or
-# the Paris Meridian (2 deg. 20'14.03" E); the former yields 07:06:30.1333...
+# the Paris Meridian (2° 20' 14.03" E); the former yields 07:06:30.1333...
# and the latter 07:06:29.333... so either way it rounds to 07:06:30,
# which is used below even though the modern-day Phù Liễn Observatory
# is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT.
diff --git a/tools/java/org/unicode/cldr/util/data/australasia b/tools/java/org/unicode/cldr/util/data/australasia
index d389ae1..dfe73d3 100644
--- a/tools/java/org/unicode/cldr/util/data/australasia
+++ b/tools/java/org/unicode/cldr/util/data/australasia
@@ -1,3 +1,5 @@
+# tzdb data for Australasia and environs, and for much of the Pacific
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
@@ -196,20 +198,20 @@
# Lord Howe Island
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule LH 1981 1984 - Oct lastSun 2:00 1:00 D
-Rule LH 1982 1985 - Mar Sun>=1 2:00 0 S
-Rule LH 1985 only - Oct lastSun 2:00 0:30 D
-Rule LH 1986 1989 - Mar Sun>=15 2:00 0 S
-Rule LH 1986 only - Oct 19 2:00 0:30 D
-Rule LH 1987 1999 - Oct lastSun 2:00 0:30 D
-Rule LH 1990 1995 - Mar Sun>=1 2:00 0 S
-Rule LH 1996 2005 - Mar lastSun 2:00 0 S
-Rule LH 2000 only - Aug lastSun 2:00 0:30 D
-Rule LH 2001 2007 - Oct lastSun 2:00 0:30 D
-Rule LH 2006 only - Apr Sun>=1 2:00 0 S
-Rule LH 2007 only - Mar lastSun 2:00 0 S
-Rule LH 2008 max - Apr Sun>=1 2:00 0 S
-Rule LH 2008 max - Oct Sun>=1 2:00 0:30 D
+Rule LH 1981 1984 - Oct lastSun 2:00 1:00 -
+Rule LH 1982 1985 - Mar Sun>=1 2:00 0 -
+Rule LH 1985 only - Oct lastSun 2:00 0:30 -
+Rule LH 1986 1989 - Mar Sun>=15 2:00 0 -
+Rule LH 1986 only - Oct 19 2:00 0:30 -
+Rule LH 1987 1999 - Oct lastSun 2:00 0:30 -
+Rule LH 1990 1995 - Mar Sun>=1 2:00 0 -
+Rule LH 1996 2005 - Mar lastSun 2:00 0 -
+Rule LH 2000 only - Aug lastSun 2:00 0:30 -
+Rule LH 2001 2007 - Oct lastSun 2:00 0:30 -
+Rule LH 2006 only - Apr Sun>=1 2:00 0 -
+Rule LH 2007 only - Mar lastSun 2:00 0 -
+Rule LH 2008 max - Apr Sun>=1 2:00 0 -
+Rule LH 2008 max - Oct Sun>=1 2:00 0:30 -
Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb
10:00 - AEST 1981 Mar
10:30 LH +1030/+1130 1985 Jul
@@ -293,7 +295,7 @@
# http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=1096:3310-cabinet-approves-change-in-daylight-savings-dates&catid=49:cabinet-releases&Itemid=166
#
# A bit more background info here:
-# http://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html
+# https://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html
# From Alexander Krivenyshev (2010-10-24):
# According to Radio Fiji and Fiji Times online, Fiji will end DST 3
@@ -357,23 +359,33 @@
# clocks go forward an hour at 2am to 3am.... Daylight Saving will
# end at 3.00am on Sunday 15th January 2017."
-# From Paul Eggert (2016-10-03):
-# For now, guess DST from 02:00 the first Sunday in November to
-# 03:00 the third Sunday in January. Although ad hoc, it matches
+# From Paul Eggert (2017-08-21):
+# Dominic Fok writes (2017-08-20) that DST ends 2018-01-14, citing
+# Extraordinary Government of Fiji Gazette Supplement No. 21 (2017-08-27),
+# [Legal Notice No. 41] of an order of the previous day by J Usamate.
+
+# From Raymond Kumar (2018-07-13):
+# http://www.fijitimes.com/government-approves-2018-daylight-saving/
+# ... The daylight saving period will end at 3am on Sunday January 13, 2019.
+#
+# From Paul Eggert (2018-07-15):
+# For now, guess DST from 02:00 the first Sunday in November to 03:00
+# the first Sunday on or after January 13. January transitions reportedly
+# depend on when school terms start. Although the guess is ad hoc, it matches
# transitions since late 2014 and seems more likely to match future
# practice than guessing no DST.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 S
+Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 -
Rule Fiji 1999 2000 - Feb lastSun 3:00 0 -
-Rule Fiji 2009 only - Nov 29 2:00 1:00 S
+Rule Fiji 2009 only - Nov 29 2:00 1:00 -
Rule Fiji 2010 only - Mar lastSun 3:00 0 -
-Rule Fiji 2010 2013 - Oct Sun>=21 2:00 1:00 S
+Rule Fiji 2010 2013 - Oct Sun>=21 2:00 1:00 -
Rule Fiji 2011 only - Mar Sun>=1 3:00 0 -
Rule Fiji 2012 2013 - Jan Sun>=18 3:00 0 -
Rule Fiji 2014 only - Jan Sun>=18 2:00 0 -
-Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 S
-Rule Fiji 2015 max - Jan Sun>=15 3:00 0 -
+Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 -
+Rule Fiji 2015 max - Jan Sun>=13 3:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva
12:00 Fiji +12/+13
@@ -390,10 +402,44 @@
# it is uninhabited.
# Guam
+
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+# http://guamlegislature.com/Public_Laws_5th/PL05-025.pdf
+# http://documents.guam.gov/wp-content/uploads/E.O.-59-7-Guam-Daylight-Savings-Time-May-6-1959.pdf
+Rule Guam 1959 only - Jun 27 2:00 1:00 D
+# http://documents.guam.gov/wp-content/uploads/E.O.-61-5-Revocation-of-Daylight-Saving-Time-and-Restoratio.pdf
+Rule Guam 1961 only - Jan 29 2:00 0 S
+# http://documents.guam.gov/wp-content/uploads/E.O.-67-13-Guam-Daylight-Savings-Time.pdf
+Rule Guam 1967 only - Sep 1 2:00 1:00 D
+# http://documents.guam.gov/wp-content/uploads/E.O.-69-2-Repeal-of-Guam-Daylight-Saving-Time.pdf
+Rule Guam 1969 only - Jan 26 0:01 0 S
+# http://documents.guam.gov/wp-content/uploads/E.O.-69-10-Guam-Daylight-Saving-Time.pdf
+Rule Guam 1969 only - Jun 22 2:00 1:00 D
+Rule Guam 1969 only - Aug 31 2:00 0 S
+# http://documents.guam.gov/wp-content/uploads/E.O.-70-10-Guam-Daylight-Saving-Time.pdf
+# http://documents.guam.gov/wp-content/uploads/E.O.-70-30-End-of-Guam-Daylight-Saving-Time.pdf
+# http://documents.guam.gov/wp-content/uploads/E.O.-71-5-Guam-Daylight-Savings-Time.pdf
+Rule Guam 1970 1971 - Apr lastSun 2:00 1:00 D
+Rule Guam 1970 1971 - Sep Sun>=1 2:00 0 S
+# http://documents.guam.gov/wp-content/uploads/E.O.-73-28.-Guam-Day-light-Saving-Time.pdf
+Rule Guam 1973 only - Dec 16 2:00 1:00 D
+# http://documents.guam.gov/wp-content/uploads/E.O.-74-7-Guam-Daylight-Savings-Time-Rescinded.pdf
+Rule Guam 1974 only - Feb 24 2:00 0 S
+# http://documents.guam.gov/wp-content/uploads/E.O.-76-13-Daylight-Savings-Time.pdf
+Rule Guam 1976 only - May 26 2:00 1:00 D
+# http://documents.guam.gov/wp-content/uploads/E.O.-76-25-Revocation-of-E.O.-76-13.pdf
+Rule Guam 1976 only - Aug 22 2:01 0 S
+# http://documents.guam.gov/wp-content/uploads/E.O.-77-4-Daylight-Savings-Time.pdf
+Rule Guam 1977 only - Apr 24 2:00 1:00 D
+# http://documents.guam.gov/wp-content/uploads/E.O.-77-18-Guam-Standard-Time.pdf
+Rule Guam 1977 only - Aug 28 2:00 0 S
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31
9:39:00 - LMT 1901 # Agana
- 10:00 - GST 2000 Dec 23 # Guam
+ 10:00 - GST 1941 Dec 10 # Guam
+ 9:00 - +09 1944 Jul 31
+ 10:00 Guam G%sT 2000 Dec 23
10:00 - ChST # Chamorro Standard Time
Link Pacific/Guam Pacific/Saipan # N Mariana Is
@@ -403,11 +449,11 @@
12:00 - +12
Zone Pacific/Enderbury -11:24:20 - LMT 1901
-12:00 - -12 1979 Oct
- -11:00 - -11 1995
+ -11:00 - -11 1994 Dec 31
13:00 - +13
Zone Pacific/Kiritimati -10:29:20 - LMT 1901
-10:40 - -1040 1979 Oct
- -10:00 - -10 1995
+ -10:00 - -10 1994 Dec 31
14:00 - +14
# N Mariana Is
@@ -415,38 +461,63 @@
# Marshall Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Majuro 11:24:48 - LMT 1901
- 11:00 - +11 1969 Oct
- 12:00 - +12
-Zone Pacific/Kwajalein 11:09:20 - LMT 1901
- 11:00 - +11 1969 Oct
- -12:00 - -12 1993 Aug 20
- 12:00 - +12
+Zone Pacific/Majuro 11:24:48 - LMT 1901
+ 11:00 - +11 1914 Oct
+ 9:00 - +09 1919 Feb 1
+ 11:00 - +11 1937
+ 10:00 - +10 1941 Apr 1
+ 9:00 - +09 1944 Jan 30
+ 11:00 - +11 1969 Oct
+ 12:00 - +12
+Zone Pacific/Kwajalein 11:09:20 - LMT 1901
+ 11:00 - +11 1937
+ 10:00 - +10 1941 Apr 1
+ 9:00 - +09 1944 Feb 6
+ 11:00 - +11 1969 Oct
+ -12:00 - -12 1993 Aug 20 24:00
+ 12:00 - +12
# Micronesia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Chuuk 10:07:08 - LMT 1901
- 10:00 - +10
-Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia
- 11:00 - +11
-Zone Pacific/Kosrae 10:51:56 - LMT 1901
- 11:00 - +11 1969 Oct
- 12:00 - +12 1999
- 11:00 - +11
+Zone Pacific/Chuuk -13:52:52 - LMT 1844 Dec 31
+ 10:07:08 - LMT 1901
+ 10:00 - +10 1914 Oct
+ 9:00 - +09 1919 Feb 1
+ 10:00 - +10 1941 Apr 1
+ 9:00 - +09 1945 Aug
+ 10:00 - +10
+Zone Pacific/Pohnpei -13:27:08 - LMT 1844 Dec 31 # Kolonia
+ 10:32:52 - LMT 1901
+ 11:00 - +11 1914 Oct
+ 9:00 - +09 1919 Feb 1
+ 11:00 - +11 1937
+ 10:00 - +10 1941 Apr 1
+ 9:00 - +09 1945 Aug
+ 11:00 - +11
+Zone Pacific/Kosrae -13:08:04 - LMT 1844 Dec 31
+ 10:51:56 - LMT 1901
+ 11:00 - +11 1914 Oct
+ 9:00 - +09 1919 Feb 1
+ 11:00 - +11 1937
+ 10:00 - +10 1941 Apr 1
+ 9:00 - +09 1945 Aug
+ 11:00 - +11 1969 Oct
+ 12:00 - +12 1999
+ 11:00 - +11
# Nauru
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe
- 11:30 - +1130 1942 Mar 15
- 9:00 - +09 1944 Aug 15
- 11:30 - +1130 1979 May
+ 11:30 - +1130 1942 Aug 29
+ 9:00 - +09 1945 Sep 8
+ 11:30 - +1130 1979 Feb 10 2:00
12:00 - +12
# New Caledonia
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule NC 1977 1978 - Dec Sun>=1 0:00 1:00 S
+Rule NC 1977 1978 - Dec Sun>=1 0:00 1:00 -
Rule NC 1978 1979 - Feb 27 0:00 0 -
-Rule NC 1996 only - Dec 1 2:00s 1:00 S
+Rule NC 1996 only - Dec 1 2:00s 1:00 -
# Shanks & Pottenger say the following was at 2:00; go with IATA.
Rule NC 1997 only - Mar 2 2:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -466,27 +537,28 @@
Rule NZ 1934 1940 - Apr lastSun 2:00 0 M
Rule NZ 1934 1940 - Sep lastSun 2:00 0:30 S
Rule NZ 1946 only - Jan 1 0:00 0 S
-# Since 1957 Chatham has been 45 minutes ahead of NZ, but there's no
-# convenient single notation for the date and time of this transition
-# so we must duplicate the Rule lines.
+# Since 1957 Chatham has been 45 minutes ahead of NZ, but until 2018a
+# there was no documented single notation for the date and time of this
+# transition. Duplicate the Rule lines for now, to give the 2018a change
+# time to percolate out.
Rule NZ 1974 only - Nov Sun>=1 2:00s 1:00 D
-Rule Chatham 1974 only - Nov Sun>=1 2:45s 1:00 D
+Rule Chatham 1974 only - Nov Sun>=1 2:45s 1:00 -
Rule NZ 1975 only - Feb lastSun 2:00s 0 S
-Rule Chatham 1975 only - Feb lastSun 2:45s 0 S
+Rule Chatham 1975 only - Feb lastSun 2:45s 0 -
Rule NZ 1975 1988 - Oct lastSun 2:00s 1:00 D
-Rule Chatham 1975 1988 - Oct lastSun 2:45s 1:00 D
+Rule Chatham 1975 1988 - Oct lastSun 2:45s 1:00 -
Rule NZ 1976 1989 - Mar Sun>=1 2:00s 0 S
-Rule Chatham 1976 1989 - Mar Sun>=1 2:45s 0 S
+Rule Chatham 1976 1989 - Mar Sun>=1 2:45s 0 -
Rule NZ 1989 only - Oct Sun>=8 2:00s 1:00 D
-Rule Chatham 1989 only - Oct Sun>=8 2:45s 1:00 D
+Rule Chatham 1989 only - Oct Sun>=8 2:45s 1:00 -
Rule NZ 1990 2006 - Oct Sun>=1 2:00s 1:00 D
-Rule Chatham 1990 2006 - Oct Sun>=1 2:45s 1:00 D
+Rule Chatham 1990 2006 - Oct Sun>=1 2:45s 1:00 -
Rule NZ 1990 2007 - Mar Sun>=15 2:00s 0 S
-Rule Chatham 1990 2007 - Mar Sun>=15 2:45s 0 S
+Rule Chatham 1990 2007 - Mar Sun>=15 2:45s 0 -
Rule NZ 2007 max - Sep lastSun 2:00s 1:00 D
-Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 D
+Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 -
Rule NZ 2008 max - Apr Sun>=1 2:00s 0 S
-Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 S
+Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2
11:30 NZ NZ%sT 1946 Jan 1
@@ -510,9 +582,9 @@
# Cook Is
# From Shanks & Pottenger:
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Cook 1978 only - Nov 12 0:00 0:30 HS
+Rule Cook 1978 only - Nov 12 0:00 0:30 -
Rule Cook 1979 1991 - Mar Sun>=1 0:00 0 -
-Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 HS
+Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua
-10:30 - -1030 1978 Nov 12
@@ -539,8 +611,9 @@
# Palau (Belau)
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror
- 9:00 - +09
+Zone Pacific/Palau -15:02:04 - LMT 1844 Dec 31 # Koror
+ 8:57:56 - LMT 1901
+ 9:00 - +09
# Papua New Guinea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -557,7 +630,7 @@
# The World War II entries below are instead based on Arawa-Kieta.
# The Japanese occupied Kieta in July 1942,
# according to the Pacific War Online Encyclopedia
-# http://pwencycl.kgbudge.com/B/o/Bougainville.htm
+# https://pwencycl.kgbudge.com/B/o/Bougainville.htm
# and seem to have controlled it until their 1945-08-21 surrender.
#
# The Autonomous Region of Bougainville switched from UT +10 to +11
@@ -579,7 +652,7 @@
-8:00 - -08
# American Samoa
-Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5
+Zone Pacific/Pago_Pago 12:37:12 - LMT 1892 Jul 5
-11:22:48 - LMT 1911
-11:00 - SST # S=Samoa
Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands
@@ -595,7 +668,7 @@
# Sunday of April 2011."
#
# Background info:
-# http://www.timeanddate.com/news/time/samoa-dst-plan-2009.html
+# https://www.timeanddate.com/news/time/samoa-dst-plan-2009.html
#
# Samoa's Daylight Saving Time Act 2009 is available here, but does not
# contain any dates:
@@ -653,13 +726,13 @@
# Assume the pattern instituted in 2012 will continue indefinitely.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule WS 2010 only - Sep lastSun 0:00 1 D
-Rule WS 2011 only - Apr Sat>=1 4:00 0 S
-Rule WS 2011 only - Sep lastSat 3:00 1 D
-Rule WS 2012 max - Apr Sun>=1 4:00 0 S
-Rule WS 2012 max - Sep lastSun 3:00 1 D
+Rule WS 2010 only - Sep lastSun 0:00 1 -
+Rule WS 2011 only - Apr Sat>=1 4:00 0 -
+Rule WS 2011 only - Sep lastSat 3:00 1 -
+Rule WS 2012 max - Apr Sun>=1 4:00 0 -
+Rule WS 2012 max - Sep lastSun 3:00 1 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
+Zone Pacific/Apia 12:33:04 - LMT 1892 Jul 5
-11:26:56 - LMT 1911
-11:30 - -1130 1950
-11:00 WS -11/-10 2011 Dec 29 24:00
@@ -680,13 +753,13 @@
# From Steffen Thorsen (2012-07-25)
# ... we double checked by calling hotels and offices based in Tokelau asking
# about the time there, and they all told a time that agrees with UTC+13....
-# Shanks says UTC-10 from 1901 [but] ... there is a good chance the change
-# actually was to UTC-11 back then.
+# Shanks says UT-10 from 1901 [but] ... there is a good chance the change
+# actually was to UT-11 back then.
#
# From Paul Eggert (2012-07-25)
# A Google Books snippet of Appendix to the Journals of the House of
# Representatives of New Zealand, Session 1948,
-# <http://books.google.com/books?id=ZaVCAQAAIAAJ>, page 65, says Tokelau
+# <https://books.google.com/books?id=ZaVCAQAAIAAJ>, page 65, says Tokelau
# was "11 hours slow on G.M.T." Go with Thorsen and assume Shanks & Pottenger
# are off by an hour starting in 1901.
@@ -697,12 +770,12 @@
# Tonga
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Tonga 1999 only - Oct 7 2:00s 1:00 S
+Rule Tonga 1999 only - Oct 7 2:00s 1:00 -
Rule Tonga 2000 only - Mar 19 2:00s 0 -
-Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 S
+Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 -
Rule Tonga 2001 2002 - Jan lastSun 2:00 0 -
-Rule Tonga 2016 max - Nov Sun>=1 2:00 1:00 S
-Rule Tonga 2017 max - Jan Sun>=15 3:00 0 -
+Rule Tonga 2016 only - Nov Sun>=1 2:00 1:00 -
+Rule Tonga 2017 only - Jan Sun>=15 3:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Tongatapu 12:19:20 - LMT 1901
12:20 - +1220 1941
@@ -756,7 +829,7 @@
# Operation Fishbowl shot (Tightrope, 1962-11-04).... [See] Herman Hoerlin,
# "The United States High-Altitude Test Experience: A Review Emphasizing the
# Impact on the Environment", Los Alamos LA-6405, Oct 1976.
-# http://www.fas.org/sgp/othergov/doe/lanl/docs1/00322994.pdf
+# https://www.fas.org/sgp/othergov/doe/lanl/docs1/00322994.pdf
# See the table on page 4 where he lists GMT and local times for the tests; a
# footnote for the JI tests reads that local time is "JI time = Hawaii Time
# Minus One Hour".
@@ -778,12 +851,12 @@
# Vanuatu
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Vanuatu 1983 only - Sep 25 0:00 1:00 S
+Rule Vanuatu 1983 only - Sep 25 0:00 1:00 -
Rule Vanuatu 1984 1991 - Mar Sun>=23 0:00 0 -
-Rule Vanuatu 1984 only - Oct 23 0:00 1:00 S
-Rule Vanuatu 1985 1991 - Sep Sun>=23 0:00 1:00 S
+Rule Vanuatu 1984 only - Oct 23 0:00 1:00 -
+Rule Vanuatu 1985 1991 - Sep Sun>=23 0:00 1:00 -
Rule Vanuatu 1992 1993 - Jan Sun>=23 0:00 0 -
-Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 S
+Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
11:00 Vanuatu +11/+12
@@ -802,7 +875,7 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2017-02-10):
+# From Paul Eggert (2018-11-18):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
@@ -822,11 +895,12 @@
#
# For data circa 1899, a common source is:
# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
-# http://www.jstor.org/stable/1774359
+# https://www.jstor.org/stable/1774359
#
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
#
+# I invented the abbreviation marked "*".
# The following abbreviations are from other sources.
# Corrections are welcome!
# std dst
@@ -834,7 +908,7 @@
# 8:00 AWST AWDT Western Australia
# 9:30 ACST ACDT Central Australia
# 10:00 AEST AEDT Eastern Australia
-# 10:00 GST Guam through 2000
+# 10:00 GST GDT* Guam through 2000
# 10:00 ChST Chamorro
# 11:30 NZMT NZST New Zealand through 1945
# 12:00 NZST NZDT New Zealand 1946-present
@@ -969,7 +1043,7 @@
# AEST ACST AWST AEDT ACDT
#
# Parliamentary Library (2008-11-10)
-# http://www.aph.gov.au/binaries/library/pubs/rp/2008-09/09rp14.pdf
+# https://www.aph.gov.au/binaries/library/pubs/rp/2008-09/09rp14.pdf
# EST CST WST preferred for standard time; AEST AEDT ACST ACDT also used
#
# The Transport Safety Bureau has an extensive series of accident reports,
@@ -1005,13 +1079,13 @@
#
# NSW (including LHI and Broken Hill):
# Standard Time Act 1987 (updated 1995-04-04)
-# http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html
+# https://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html
# ACT
# Standard Time and Summer Time Act 1972
-# http://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html
+# https://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html
# SA
# Standard Time Act, 1898
-# http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html
+# https://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html
# From David Grosz (2005-06-13):
# It was announced last week that Daylight Saving would be extended by
@@ -1081,7 +1155,23 @@
# (1999-09-27) writes that Giles Meteorological Station uses
# South Australian time even though it's located in Western Australia.
+# From Paul Eggert (2018-04-01):
+# The Guardian Express of Perth, Australia reported today that the
+# government decided to advance the clocks permanently on January 1,
+# 2019, from UT +08 to UT +09. The article noted that an exemption
+# would be made for people aged 61 and over, who "can apply in writing
+# to have the extra hour of sunshine removed from their area." See:
+# Daylight saving coming to WA in 2019. Guardian Express. 2018-04-01.
+# https://www.communitynews.com.au/guardian-express/news/exclusive-daylight-savings-coming-wa-summer-2018/
+
# Queensland
+
+# From Paul Eggert (2018-02-26):
+# I lack access to the following source for Queensland DST:
+# Pearce C. History of daylight saving time in Queensland.
+# Queensland Hist J. 2017 Aug;23(6):389-403
+# https://search.informit.com.au/documentSummary;dn=994682348436426;res=IELHSS
+
# From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
# # The state of QUEENSLAND.. [ Courtesy Qld. Dept Premier Econ&Trade Devel ]
# # [ Dec 1990 ]
@@ -1306,7 +1396,7 @@
# http://abc.net.au/news/regionals/neweng/monthly/regeng-22jul1999-1.htm
# (1999-07-22). For now, we'll wait to see if this really happens.
#
-# Victoria will following NSW. See:
+# Victoria will follow NSW. See:
# Vic to extend daylight saving (1999-07-28)
# http://abc.net.au/local/news/olympics/1999/07/item19990728112314_1.htm
#
@@ -1409,7 +1499,7 @@
# the ACT for all 52 weeks of the year...
#
# We have a wrap-up here:
-# http://www.timeanddate.com/news/time/south-australia-extends-dst.html
+# https://www.timeanddate.com/news/time/south-australia-extends-dst.html
###############################################################################
# New Zealand
@@ -1447,7 +1537,7 @@
#
# From Paul Eggert (2006-03-22):
# The Department of Internal Affairs (DIA) maintains a brief history,
-# as does Carol Squires; see tz-link.htm for the full references.
+# as does Carol Squires; see tz-link.html for the full references.
# Use these sources in preference to Shanks & Pottenger.
#
# For Chatham, IATA SSIM (1991/1999) gives the NZ rules but with
@@ -1463,7 +1553,7 @@
# From Paul Eggert (2014-07-14):
# Chatham Island time was formally standardized on 1957-01-01 by
# New Zealand's Standard Time Amendment Act 1956 (1956-10-26).
-# http://www.austlii.edu.au/nz/legis/hist_act/staa19561956n100244.pdf
+# https://www.austlii.edu.au/nz/legis/hist_act/staa19561956n100244.pdf
# According to Google Books snippet view, a speaker in the New Zealand
# parliamentary debates in 1956 said "Clause 78 makes provision for standard
# time in the Chatham Islands. The time there is 45 minutes in advance of New
@@ -1508,31 +1598,79 @@
# "declared it the same day [throughout] the country as of Jan. 1, 1995"
# as part of the competition to be first into the 21st century.
+# From Kerry Shetline (2018-02-03):
+# December 31 was the day that was skipped, so that the transition
+# would be from Friday December 30, 1994 to Sunday January 1, 1995.
+# From Paul Eggert (2018-02-04):
+# One source for this is page 202 of: Bartky IR. One Time Fits All:
+# The Campaigns for Global Uniformity (2007).
# Kwajalein
-# In comp.risks 14.87 (26 August 1993), Peter Neumann writes:
-# I wonder what happened in Kwajalein, where there was NO Friday,
-# 1993-08-20. Thursday night at midnight Kwajalein switched sides with
-# respect to the International Date Line, to rejoin its fellow islands,
-# going from 11:59 p.m. Thursday to 12:00 m. Saturday in a blink.
+# From an AP article (1993-08-22):
+# "The nearly 3,000 Americans living on this remote Pacific atoll have a good
+# excuse for not remembering Saturday night: there wasn't one. Residents were
+# going to bed Friday night and waking up Sunday morning because at midnight
+# -- 8 A.M. Eastern daylight time on Saturday -- Kwajalein was jumping from
+# one side of the international date line to the other."
+# "In Marshall Islands, Friday is followed by Sunday", NY Times. 1993-08-22.
+# https://www.nytimes.com/1993/08/22/world/in-marshall-islands-friday-is-followed-by-sunday.html
+
+# From Phake Nick (2018-10-27):
+# <https://wiki.suikawiki.org/n/南洋群島の標準時> ... pointed out that
+# currently tzdata say Pacific/Kwajalein switched from GMT+11 to GMT-12 in
+# 1969 October without explanation, however an 1993 article from NYT say it
+# synchorized its day with US mainland about 40 years ago and thus the switch
+# should occur at around 1950s instead.
+#
+# From Paul Eggert (2018-11-18):
+# The NYT (actually, AP) article is vague and possibly wrong about this.
+# The article says the earlier switch was "40 years ago when the United States
+# Army established a missile test range here". However, the Kwajalein Test
+# Center was established on 1960-10-01 and was run by the US Navy. It was
+# transferred to the US Army on 1964-07-01. See "Seize the High Ground"
+# <https://history.army.mil/html/books/070/70-88-1/cmhPub_70-88-1.pdf>.
+# Given that Shanks was right on the money about the 1993 change, I'm inclined
+# to take Shanks's word for the 1969 change unless we find better evidence.
# N Mariana Is, Guam
+# From Phake Nick (2018-10-27):
+# Guam Island was briefly annexed by Japan during ... year 1941-1944 ...
+# however there are no detailed information about what time it use during that
+# period. It would probably be reasonable to assume Guam use GMT+9 during
+# that period of time like the surrounding area.
+
+# From Paul Eggert (2018-11-18):
# Howse writes (p 153) "The Spaniards, on the other hand, reached the
# Philippines and the Ladrones from America," and implies that the Ladrones
# (now called the Marianas) kept American date for quite some time.
# For now, we assume the Ladrones switched at the same time as the Philippines;
# see Asia/Manila.
-
+#
+# Use 1941-12-10 and 1944-07-31 for Guam WWII transitions, as the rough start
+# and end of Japanese control of Agana. We don't know whether the Northern
+# Marianas followed Guam's DST rules from 1959 through 1977; for now, assume
+# they did as that avoids the need for a separate zone due to our 1970 cutoff.
+#
# US Public Law 106-564 (2000-12-23) made UT +10 the official standard time,
# under the name "Chamorro Standard Time". There is no official abbreviation,
# but Congressman Robert A. Underwood, author of the bill that became law,
# wrote in a press release (2000-12-27) that he will seek the use of "ChST".
+# See also the commentary for Micronesia.
-# Micronesia
+
+# Marshall Is
+# See the commentary for Micronesia.
+
+
+# Micronesia (and nearby)
+
+# From Paul Eggert (2018-11-18):
+# Like the Ladrones (see Guam commentary), assume the Spanish East Indies
+# kept American time until the Philippines switched at the end of 1844.
# Alan Eugene Davis writes (1996-03-16),
# "I am certain, having lived there for the past decade, that 'Truk'
@@ -1548,6 +1686,95 @@
# that Truk and Yap are UT +10, and Ponape and Kosrae are +11.
# We don't know when Kosrae switched from +12; assume January 1 for now.
+# From Phake Nick (2018-10-27):
+#
+# From a Japanese wiki site https://wiki.suikawiki.org/n/南洋群島の標準時
+# ...
+# For "Southern Islands" (modern region of Mariana + Palau + Federation of
+# Micronesia + Marshall Islands):
+#
+# A 1906 Japanese magazine shown the Caroline Islands and Mariana Islands
+# who was occupied by Germany at the time as GMT+10, together with the like
+# of German New Guinea. However there is a marking saying it have not been
+# implemented (yet). No further information after that were found.
+#
+# Japan invaded those islands in 1914, and records shows that they were
+# instructed to use JST at the time.
+#
+# 1915 January telecommunication record on the Jaluit Atoll shows they use
+# the meridian of 170E as standard time (GMT+11:20), which is similar to the
+# longitude of the atoll.
+# 1915 February record say the 170E standard time is to be used until
+# February 9 noon, and after February 9 noon they are to use JST.
+# However these are time used within the Japanese Military at the time and
+# probably does not reflect the time used by local resident at the time (that
+# is if they keep their own time back then)
+#
+# In January 1919 the occupying force issued a command that split the area
+# into three different timezone with meridian of 135E, 150E, 165E (JST+0, +1,
+# +2), and the command was to become effective from February 1 of the same
+# year. Despite the target of the command is still only for the occupying
+# force itself, further publication have described the time as the standard
+# time for the occupied area and thus it can probably be seen as such.
+# * Area that use meridian of 135E: Palau and Yap civil administration area
+# (Southern Islands Western Standard Time)
+# * Area that use meridian of 150E: Truk (Chuuk) and Saipan civil
+# administration area (Southern Islands Central Standard Time)
+# * Area that use meridian of 165E: Ponape (Pohnpei) and Jaluit civil
+# administration area (Southern Islands Eastern Standard Time).
+# * In the next few years Japanese occupation of those islands have been
+# formalized via League of Nation Mandate (South Pacific Mandate) and formal
+# governance structure have been established, these district [become
+# subprefectures] and timezone classification have been inherited as standard
+# time of the area.
+# * Saipan subprefecture include Mariana islands (exclude Guam which was
+# occupied by America at the time), Palau and Yap subprefecture rule the
+# Western Caroline Islands with 137E longitude as border, Truk and Ponape
+# subprefecture rule the Eastern Caroline Islands with 154E as border, Ponape
+# subprefecture also rule part of Marshall Islands to the west of 164E
+# starting from (1918?) and Jaluit subprefecture rule the rest of the
+# Marshall Islands.
+#
+# And then in year 1937, an announcement was made to change the time in the
+# area into 2 timezones:
+# * Area that use meridian of 135E: area administered by Palau, Yap and
+# Saipan subprefecture (Southern Islands Western Standard Time)
+# * Area that use meridian of 150E: area administered by Truk (Chuuk),
+# Ponape (Pohnpei) and Jaluit subprefecture (Southern Islands Eastern
+# Standard Time)
+#
+# Another announcement issued in 1941 say that on April 1 that year,
+# standard time of the Southern Islands would be changed to use the meridian
+# of 135E (GMT+9), and thus abolishing timezone different within the area.
+#
+# Then Pacific theater of WWII started and Japan slowly lose control on the
+# island. The webpage I linked above contain no information during this
+# period of time....
+#
+# After the end of WWII, in 1946 February, a document written by the
+# (former?) Japanese military personnel describe there are 3 hours time
+# different between Caroline islands time/Wake island time and the Chungking
+# time, which would mean the time being used there at the time was GMT+10.
+#
+# After that, the area become Trust Territories of the Pacific Islands
+# under American administration from year 1947. The site listed some
+# American/International books/maps/publications about time used in those
+# area during this period of time but they doesn't seems to be reliable
+# information so it would be the best if someone know where can more reliable
+# information can be found.
+#
+#
+# From Paul Eggert (2018-11-18):
+#
+# For the above, use vague dates like "1914" and "1945" for transitions that
+# plausibly exist but for which the details are not known. The information
+# for Wake is too sketchy to act on.
+#
+# The 1906 GMT+10 info about German-controlled islands might not have been
+# done, so omit it from the data for now.
+#
+# The Jaluit info governs Kwajalein.
+
# Midway
@@ -1565,6 +1792,29 @@
# started DST on June 3. Possibly DST was observed other years
# in Midway, but we have no record of it.
+# Nauru
+
+# From Phake Nick (2018-10-31):
+# Currently, the tz database say Nauru use LMT until 1921, and then
+# switched to GMT+11:30 for the next two decades.
+# However, a number of timezone map published in America/Japan back then
+# showed its timezone as GMT+11 per https://wiki.suikawiki.org/n/ナウルの標準時
+# And it would also be nice if the 1921 transition date could be sourced.
+# ...
+# The "Nauru Standard Time Act 1978 Time Change"
+# http://ronlaw.gov.nr/nauru_lpms/files/gazettes/4b23a17d2030150404db7a5fa5872f52.pdf#page=3
+# based on "Nauru Standard Time Act 1978 Time Change"
+# http://www.paclii.org/nr/legis/num_act/nsta1978207/ defined that "Nauru
+# Alternative Time" (GMT+12) should be in effect from 1979 Feb.
+#
+# From Paul Eggert (2018-11-19):
+# The 1921-01-15 introduction of standard time is in Shanks; it is also in
+# "Standard Time Throughout the World", US National Bureau of Standards (1935),
+# page 3, which does not give the UT offset. In response to a comment by
+# Phake Nick I set the Nauru time of occupation by Japan to
+# 1942-08-29/1945-09-08 by using dates from:
+# https://en.wikipedia.org/wiki/Japanese_occupation_of_Nauru
+
# Norfolk
# From Alexander Krivenyshev (2015-09-23):
@@ -1578,7 +1828,10 @@
# the Norfolk Island Museum and the Australian Bureau of Meteorology's
# Norfolk Island station, and found no record of Norfolk observing DST
# other than in 1974/5. See:
-# http://www.timeanddate.com/time/australia/norfolk-island.html
+# https://www.timeanddate.com/time/australia/norfolk-island.html
+
+# Palau
+# See commentary for Micronesia.
# Pitcairn
@@ -1600,17 +1853,19 @@
# From Howie Phelps (1999-11-10), who talked to a Pitcairner via shortwave:
# Betty Christian told me yesterday that their local time is the same as
-# Pacific Standard Time. They used to be 1/2 hour different from us here in
+# Pacific Standard Time. They used to be ½ hour different from us here in
# Sacramento but it was changed a couple of years ago.
# (Western) Samoa and American Samoa
-# Howse writes (p 153, citing p 10 of the 1883-11-18 New York Herald)
-# that in 1879 the King of Samoa decided to change
+# Howse writes (p 153) that after the 1879 standardization on Antipodean
+# time by the British governor of Fiji, the King of Samoa decided to change
# "the date in his kingdom from the Antipodean to the American system,
# ordaining - by a masterpiece of diplomatic flattery - that
# the Fourth of July should be celebrated twice in that year."
+# This happened in 1892, according to the Evening News (Sydney) of 1892-07-20.
+# https://www.staff.science.uu.nl/~gent0113/idl/idl.htm
# Although Shanks & Pottenger says they both switched to UT -11:30
# in 1911, and to -11 in 1950. many earlier sources give -11
@@ -1621,6 +1876,7 @@
# day in 2011. Assume also that the Samoas follow the US and New
# Zealand's "ST"/"DT" style of daylight-saving abbreviations.
+
# Tonga
# From Paul Eggert (1996-01-22):
@@ -1636,7 +1892,7 @@
# 12 hours and 20 minutes ahead of GMT. When New Zealand adjusted its
# standard time in 1940s, Tonga had the choice of subtracting from its
# local time to come on the same standard time as New Zealand or of
-# advancing its time to maintain the differential of 13 degrees
+# advancing its time to maintain the differential of 13°
# (approximately 50 minutes ahead of New Zealand time).
#
# Because His Majesty King Tāufaʻāhau Tupou IV, then Crown Prince
@@ -1715,6 +1971,15 @@
# Assume Tonga will observe DST from the first Sunday in November at 02:00
# through the third Sunday in January at 03:00, like Fiji, for now.
+# From David Wade (2017-10-18):
+# In August government was disolved by the King. The current prime minister
+# continued in office in care taker mode. It is easy to see that few
+# decisions will be made until elections 16th November.
+#
+# From Paul Eggert (2017-10-18):
+# For now, guess that DST is discontinued. That's what the IATA is guessing.
+
+
# Wake
# From Vernice Anderson, Personal Secretary to Philip Jessup,
@@ -1727,11 +1992,14 @@
# making calculation of time in Washington difficult if not almost
# impossible.
#
-# http://www.trumanlibrary.org/wake/meeting.htm
+# https://www.trumanlibrary.org/oralhist/andrsonv.htm
# From Paul Eggert (2003-03-23):
# We have no other report of DST in Wake Island, so omit this info for now.
+# See also the commentary for Micronesia.
+
+
###############################################################################
# The International Date Line
@@ -1755,7 +2023,7 @@
# an international standard, there are some places on the high seas where the
# correct date is ambiguous.
-# From Wikipedia <http://en.wikipedia.org/wiki/Time_zone> (2005-08-31):
+# From Wikipedia <https://en.wikipedia.org/wiki/Time_zone> (2005-08-31):
# Before 1920, all ships kept local apparent time on the high seas by setting
# their clocks at night or at the morning sight so that, given the ship's
# speed and direction, it would be 12 o'clock when the Sun crossed the ship's
diff --git a/tools/java/org/unicode/cldr/util/data/backward b/tools/java/org/unicode/cldr/util/data/backward
index 09f2a31..51e10f4 100644
--- a/tools/java/org/unicode/cldr/util/data/backward
+++ b/tools/java/org/unicode/cldr/util/data/backward
@@ -1,7 +1,9 @@
+# tzdb links for backward compatibility
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
-# This file provides links between current names for time zones
+# This file provides links between current names for timezones
# and their old names. Many names changed in late 1993.
# Link TARGET LINK-NAME
@@ -61,7 +63,9 @@
Link America/Manaus Brazil/West
Link America/Halifax Canada/Atlantic
Link America/Winnipeg Canada/Central
-Link America/Regina Canada/East-Saskatchewan
+# This line is commented out, as the name exceeded the 14-character limit
+# and was an unused misnomer.
+#Link America/Regina Canada/East-Saskatchewan
Link America/Toronto Canada/Eastern
Link America/Edmonton Canada/Mountain
Link America/St_Johns Canada/Newfoundland
diff --git a/tools/java/org/unicode/cldr/util/data/etcetera b/tools/java/org/unicode/cldr/util/data/etcetera
index f5fa4c9..91ded93 100644
--- a/tools/java/org/unicode/cldr/util/data/etcetera
+++ b/tools/java/org/unicode/cldr/util/data/etcetera
@@ -1,9 +1,11 @@
+# tzdb data for ships at sea and other miscellany
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
# These entries are mostly present for historical reasons, so that
# people in areas not otherwise covered by the tz files could "zic -l"
-# to a time zone that was right for their area. These days, the
+# to a timezone that was right for their area. These days, the
# tz files cover almost all the inhabited world, and the only practical
# need now for the entries that are not on UTC are for ships at sea
# that cannot use POSIX TZ settings.
diff --git a/tools/java/org/unicode/cldr/util/data/europe b/tools/java/org/unicode/cldr/util/data/europe
index 558b9f1..587f7b0 100644
--- a/tools/java/org/unicode/cldr/util/data/europe
+++ b/tools/java/org/unicode/cldr/util/data/europe
@@ -1,3 +1,5 @@
+# tzdb data for Europe and environs
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
@@ -37,14 +39,14 @@
# [PDF] (1914-03)
#
# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
-# <http://www.jstor.org/stable/1774359>. He writes:
+# <https://www.jstor.org/stable/1774359>. He writes:
# "It is requested that corrections and additions to these tables
# may be sent to Mr. John Milne, Royal Geographical Society,
# Savile Row, London." Nowadays please email them to tz@iana.org.
#
# Byalokoz EL. New Counting of Time in Russia since July 1, 1919.
# This Russian-language source was consulted by Vladimir Karpinsky; see
-# http://mm.icann.org/pipermail/tz/2014-August/021320.html
+# https://mm.icann.org/pipermail/tz/2014-August/021320.html
# The full Russian citation is:
# Бялокоз, Евгений Людвигович. Новый счет времени в течении суток
# введенный декретом Совета народных комиссаров для всей России с 1-го
@@ -68,14 +70,15 @@
# 0:00 WET WEST WEMT Western Europe
# 0:19:32.13 AMT* NST* Amsterdam, Netherlands Summer (1835-1937)
# 1:00 BST British Standard (1968-1971)
+# 1:00 IST GMT Irish Standard (1968-) with winter DST
# 1:00 CET CEST CEMT Central Europe
# 1:00:14 SET Swedish (1879-1899)
# 1:36:34 RMT* LST* Riga, Latvian Summer (1880-1926)*
# 2:00 EET EEST Eastern Europe
# 3:00 MSK MSD MDST* Moscow
-# From Peter Ilieve (1994-12-04),
-# The original six [EU members]: Belgium, France, (West) Germany, Italy,
+# From Peter Ilieve (1994-12-04), re EEC/EC/EU members:
+# The original six: Belgium, France, (West) Germany, Italy,
# Luxembourg, the Netherlands.
# Plus, from 1 Jan 73: Denmark, Ireland, United Kingdom.
# Plus, from 1 Jan 81: Greece.
@@ -116,8 +119,8 @@
# along the towpath within a few yards of it.'
#
# I have a one inch to one mile map of London and my estimate of the stone's
-# position is 51 degrees 28' 30" N, 0 degrees 18' 45" W. The longitude should
-# be within about +-2". The Ordnance Survey grid reference is TQ172761.
+# position is 51° 28' 30" N, 0° 18' 45" W. The longitude should
+# be within about ±2". The Ordnance Survey grid reference is TQ172761.
#
# [This yields GMTOFF = -0:01:15 for London LMT in the 18th century.]
@@ -157,7 +160,7 @@
# after-hours daylight in which to pursue his research.
# In 1895 he presented a paper to the Wellington Philosophical Society
# that proposed a two-hour daylight-saving shift. See:
-# Hudson GV. On seasonal time-adjustment in countries south of lat. 30 deg.
+# Hudson GV. On seasonal time-adjustment in countries south of lat. 30°.
# Transactions and Proceedings of the New Zealand Institute. 1895;28:734
# http://rsnz.natlib.govt.nz/volume/rsnz_28/rsnz_28_00_006110.html
# Although some interest was expressed in New Zealand, his proposal
@@ -187,7 +190,7 @@
# foundations of civilization throughout the world.
# -- "A Silent Toast to William Willett", Pictorial Weekly;
# republished in Finest Hour (Spring 2002) 1(114):26
-# http://www.winstonchurchill.org/images/finesthour/Vol.01%20No.114.pdf
+# https://www.winstonchurchill.org/publications/finest-hour/finest-hour-114/a-silent-toast-to-william-willett-by-winston-s-churchill
# From Paul Eggert (2015-08-08):
# The OED Supplement says that the English originally said "Daylight Saving"
@@ -225,8 +228,8 @@
# official designation; the reply of the 21st was that there wasn't
# but he couldn't think of anything better than the "Double British
# Summer Time" that the BBC had been using informally.
-# http://www.polyomino.org.uk/british-time/bbc-19410418.png
-# http://www.polyomino.org.uk/british-time/ho-19410421.png
+# https://www.polyomino.org.uk/british-time/bbc-19410418.png
+# https://www.polyomino.org.uk/british-time/ho-19410421.png
# From Sir Alexander Maxwell in the above-mentioned letter (1941-04-21):
# [N]o official designation has as far as I know been adopted for the time
@@ -243,13 +246,13 @@
# the history of summer time legislation in the United Kingdom.
# Since 1998 Joseph S. Myers has been updating
# and extending this list, which can be found in
-# http://www.polyomino.org.uk/british-time/
+# https://www.polyomino.org.uk/british-time/
# From Joseph S. Myers (1998-01-06):
#
# The legal time in the UK outside of summer time is definitely GMT, not UTC;
# see Lord Tanlaw's speech
-# http://www.publications.parliament.uk/pa/ld199798/ldhansrd/vo970611/text/70611-10.htm#70611-10_head0
+# https://www.publications.parliament.uk/pa/ld199798/ldhansrd/vo970611/text/70611-10.htm#70611-10_head0
# (Lords Hansard 11 June 1997 columns 964 to 976).
# From Paul Eggert (2006-03-22):
@@ -278,16 +281,31 @@
# The following claim by Shanks & Pottenger is possible though doubtful;
# we'll ignore it for now.
# * Dublin's 1971-10-31 switch was at 02:00, even though London's was 03:00.
+
+# From Paul Eggert (2017-12-04):
#
-#
-# Whitman says Dublin Mean Time was -0:25:21, which is more precise than
-# Shanks & Pottenger.
-# Perhaps this was Dunsink Observatory Time, as Dunsink Observatory
-# (8 km NW of Dublin's center) seemingly was to Dublin as Greenwich was
-# to London. For example:
+# Dunsink Observatory (8 km NW of Dublin's center) was to Dublin as
+# Greenwich was to London. For example:
#
# "Timeball on the ballast office is down. Dunsink time."
# -- James Joyce, Ulysses
+#
+# The abbreviation DMT stood for "Dublin Mean Time" or "Dunsink Mean Time";
+# this being Ireland, opinions differed.
+#
+# Whitman says Dublin/Dunsink Mean Time was UT-00:25:21, which agrees
+# with measurements of recent visitors to the Meridian Room of Dunsink
+# Observatory; see Malone D. Dunsink and timekeeping. 2016-01-24.
+# <https://www.maths.tcd.ie/~dwmalone/time/dunsink.html>. Malone
+# writes that the Nautical Almanac listed UT-00:25:22 until 1896, when
+# it moved to UT-00:25:21.1 (I confirmed that the 1893 edition used
+# the former and the 1896 edition used the latter). Evidently the
+# news of this change propagated slowly, as Milne 1899 still lists
+# UT-00:25:22 and cites the International Telegraph Bureau. As it is
+# not clear that there was any practical significance to the change
+# from UT-00:25:22 to UT-00:25:21.1 in civil timekeeping, omit this
+# transition for now and just use the latter value, omitting its
+# fraction since our format cannot represent fractions.
# "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean Time
# was among various actions undertaken by the 'English' government that
@@ -295,7 +313,7 @@
# Irish 'public feeling (was) outraged by forcing of English time on us'."
# -- Parsons M. Dublin lost its time zone - and 25 minutes - after 1916 Rising.
# Irish Times 2014-10-27.
-# http://www.irishtimes.com/news/politics/dublin-lost-its-time-zone-and-25-minutes-after-1916-rising-1.1977411
+# https://www.irishtimes.com/news/politics/dublin-lost-its-time-zone-and-25-minutes-after-1916-rising-1.1977411
# From Joseph S. Myers (2005-01-26):
# Irish laws are available online at <http://www.irishstatutebook.ie>.
@@ -347,6 +365,28 @@
# regulations. I spoke this morning with the Secretary of the Department of
# Justice (tel +353 1 678 9711) who confirmed to me that the correct name is
# "Irish Summer Time", abbreviated to "IST".
+#
+# From Paul Eggert (2017-12-07):
+# The 1996 anonymous contributor's goal was to determine the correct
+# abbreviation for summer time in Dublin and so the contributor
+# focused on the "IST", not on the "Irish Summer Time". Though the
+# "IST" was correct, the "Irish Summer Time" appears to have been an
+# error, as Ireland's Standard Time (Amendment) Act, 1971 states that
+# standard time in Ireland remains at UT +01 and is observed in
+# summer, and that Greenwich mean time is observed in winter. (Thanks
+# to Derick Rethans for pointing out the error.) That is, when
+# Ireland amended the 1968 act that established UT +01 as Irish
+# Standard Time, it left standard time unchanged and established GMT
+# as a negative daylight saving time in winter. So, in this database
+# IST stands for Irish Summer Time for timestamps before 1968, and for
+# Irish Standard Time after that. See:
+# http://www.irishstatutebook.ie/eli/1971/act/17/enacted/en/print
+
+# Michael Deckers (2017-06-01) gave the following URLs for Ireland's
+# Summer Time Act, 1925 and Summer Time Orders, 1926 and 1947:
+# http://www.irishstatutebook.ie/eli/1925/act/8/enacted/en/print
+# http://www.irishstatutebook.ie/eli/1926/sro/919/made/en/print
+# http://www.irishstatutebook.ie/eli/1947/sro/71/made/en/print
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Summer Time Act, 1916
@@ -470,27 +510,60 @@
Link Europe/London Europe/Guernsey
Link Europe/London Europe/Isle_of_Man
+# From Paul Eggert (2018-02-15):
+# In January 2018 we discovered that the negative SAVE values in the
+# Eire rules cause problems with tests for ICU:
+# https://mm.icann.org/pipermail/tz/2018-January/025825.html
+# and with tests for OpenJDK:
+# https://mm.icann.org/pipermail/tz/2018-January/025822.html
+#
+# To work around this problem, the build procedure can translate the
+# following data into two forms, one with negative SAVE values and the
+# other form with a traditional approximation for Irish timestamps
+# after 1971-10-31 02:00 UTC; although this approximation has tm_isdst
+# flags that are reversed, its UTC offsets are correct and this often
+# suffices. This source file currently uses only nonnegative SAVE
+# values, but this is intended to change and downstream code should
+# not rely on it.
+#
+# The following is like GB-Eire and EU, except with standard time in
+# summer and negative daylight saving time in winter. It is for when
+# negative SAVE values are used.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Eire 1971 only - Oct 31 2:00u -1:00 -
+Rule Eire 1972 1980 - Mar Sun>=16 2:00u 0 -
+Rule Eire 1972 1980 - Oct Sun>=23 2:00u -1:00 -
+Rule Eire 1981 max - Mar lastSun 1:00u 0 -
+Rule Eire 1981 1989 - Oct Sun>=23 1:00u -1:00 -
+Rule Eire 1990 1995 - Oct Sun>=22 1:00u -1:00 -
+Rule Eire 1996 max - Oct lastSun 1:00u -1:00 -
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2
- -0:25:21 - DMT 1916 May 21 2:00 # Dublin MT
+ -0:25:21 - DMT 1916 May 21 2:00s
-0:25:21 1:00 IST 1916 Oct 1 2:00s
0:00 GB-Eire %s 1921 Dec 6 # independence
- 0:00 GB-Eire GMT/IST 1940 Feb 25 2:00
- 0:00 1:00 IST 1946 Oct 6 2:00
- 0:00 - GMT 1947 Mar 16 2:00
- 0:00 1:00 IST 1947 Nov 2 2:00
- 0:00 - GMT 1948 Apr 18 2:00
+ 0:00 GB-Eire GMT/IST 1940 Feb 25 2:00s
+ 0:00 1:00 IST 1946 Oct 6 2:00s
+ 0:00 - GMT 1947 Mar 16 2:00s
+ 0:00 1:00 IST 1947 Nov 2 2:00s
+ 0:00 - GMT 1948 Apr 18 2:00s
0:00 GB-Eire GMT/IST 1968 Oct 27
- 1:00 - IST 1971 Oct 31 2:00u
- 0:00 GB-Eire GMT/IST 1996
- 0:00 EU GMT/IST
+# The next line is for when negative SAVE values are used.
+ 1:00 Eire IST/GMT
+# These three lines are for when SAVE values are always nonnegative.
+# 1:00 - IST 1971 Oct 31 2:00u
+# 0:00 GB-Eire GMT/IST 1996
+# 0:00 EU GMT/IST
+
###############################################################################
# Europe
-# EU rules are for the European Union, previously known as the EC, EEC,
-# Common Market, etc.
+# The following rules are for the European Union and for its
+# predecessor organization, the European Communities.
+# For brevity they are called "EU rules" elsewhere in this file.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 S
@@ -625,7 +698,7 @@
# Council of Ministers of the USSR from 1989-03-14 No. 227.
#
# I did not find full texts of these acts. For the 1989 one we have
-# title at http://base.garant.ru/70754136/ :
+# title at https://base.garant.ru/70754136/ :
# "About change in calculation of time on the territories of
# Lithuanian SSR, Latvian SSR and Estonian SSR, Astrakhan,
# Kaliningrad, Kirov, Kuybyshev, Ulyanovsk and Uralsk oblasts".
@@ -656,7 +729,7 @@
# http://bmockbe.ru/events/?ID=7583
#
# Medvedev signed a law on the calculation of the time (in russian):
-# http://www.regnum.ru/news/polit/1413906.html
+# https://www.regnum.ru/news/polit/1413906.html
# From Arthur David Olson (2011-06-15):
# Take "abolishing daylight saving time" to mean that time is now considered
@@ -783,7 +856,7 @@
# Sources (Russian language):
# http://www.belta.by/ru/all_news/society/V-Belarusi-otmenjaetsja-perexod-na-sezonnoe-vremja_i_572952.html
# http://naviny.by/rubrics/society/2011/09/16/ic_articles_116_175144/
-# http://news.tut.by/society/250578.html
+# https://news.tut.by/society/250578.html
#
# From Alexander Bokovoy (2014-10-09):
# Belarussian government decided against changing to winter time....
@@ -899,18 +972,30 @@
# Please see the 'asia' file for Asia/Nicosia.
# Czech Republic / Czechia
+#
+# From Paul Eggert (2018-04-15):
+# The source for Czech data is: Kdy začíná a končí letní čas. 2018-04-15.
+# https://kalendar.beda.cz/kdy-zacina-a-konci-letni-cas
+# We know of no English-language name for historical Czech winter time;
+# abbreviate it as "GMT", as it happened to be GMT.
+#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Czech 1945 only - Apr 8 2:00s 1:00 S
-Rule Czech 1945 only - Nov 18 2:00s 0 -
+Rule Czech 1945 only - Apr Mon>=1 2:00s 1:00 S
+Rule Czech 1945 only - Oct 1 2:00s 0 -
Rule Czech 1946 only - May 6 2:00s 1:00 S
Rule Czech 1946 1949 - Oct Sun>=1 2:00s 0 -
-Rule Czech 1947 only - Apr 20 2:00s 1:00 S
-Rule Czech 1948 only - Apr 18 2:00s 1:00 S
+Rule Czech 1947 1948 - Apr Sun>=15 2:00s 1:00 S
Rule Czech 1949 only - Apr 9 2:00s 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Prague 0:57:44 - LMT 1850
0:57:44 - PMT 1891 Oct # Prague Mean Time
- 1:00 C-Eur CE%sT 1944 Sep 17 2:00s
+ 1:00 C-Eur CE%sT 1945 May 9
+ 1:00 Czech CE%sT 1946 Dec 1 3:00
+# Vanguard section, for zic and other parsers that support negative DST.
+ 1:00 -1:00 GMT 1947 Feb 23 2:00
+# Rearguard section, for parsers that do not support negative DST.
+# 0:00 - GMT 1947 Feb 23 2:00
+# End of rearguard section.
1:00 Czech CE%sT 1979
1:00 EU CE%sT
# Use Europe/Prague also for Slovakia.
@@ -923,7 +1008,7 @@
# The page http://www.retsinfo.dk/_GETDOCI_/ACCN/A18930008330-REGL
# confirms this, and states that the law was put forth 1893-03-29.
#
-# The EU treaty with effect from 1973:
+# The EU [actually, EEC and Euratom] treaty with effect from 1973:
# http://www.retsinfo.dk/_GETDOCI_/ACCN/A19722110030-REGL
#
# This provoked a new law from 1974 to make possible summer time changes
@@ -979,9 +1064,10 @@
# East Greenland and Franz Josef Land, but we don't know their time zones.
# My source for this is Wilhelm Dege's book mentioned under Svalbard.
#
-# From Paul Eggert (2006-03-22):
-# Greenland joined the EU as part of Denmark, obtained home rule on 1979-05-01,
-# and left the EU on 1985-02-01. It therefore should have been using EU
+# From Paul Eggert (2017-12-10):
+# Greenland joined the European Communities as part of Denmark,
+# obtained home rule on 1979-05-01, and left the European Communities
+# on 1985-02-01. It therefore should have been using EU
# rules at least through 1984. Shanks & Pottenger say Scoresbysund and Godthåb
# used C-Eur rules after 1980, but IATA SSIM (1991/1996) says they use EU
# rules since at least 1991. Assume EU rules since 1980.
@@ -1104,7 +1190,7 @@
# for their standard and summer times. He says no, they use "suveaeg"
# (summer time) and "talveaeg" (winter time).
-# From The Baltic Times <http://www.baltictimes.com/> (1999-09-09)
+# From The Baltic Times <https://www.baltictimes.com/> (1999-09-09)
# via Steffen Thorsen:
# This year will mark the last time Estonia shifts to summer time,
# a council of the ruling coalition announced Sept. 6....
@@ -1156,7 +1242,7 @@
# This is documented in Heikki Oja: Aikakirja 2007, published by The Almanac
# Office of University of Helsinki, ISBN 952-10-3221-9, available online (in
# Finnish) at
-# http://almanakka.helsinki.fi/aikakirja/Aikakirja2007kokonaan.pdf
+# https://almanakka.helsinki.fi/aikakirja/Aikakirja2007kokonaan.pdf
#
# Page 105 (56 in PDF version) has a handy table of all past daylight savings
# transitions. It is easy enough to interpret without Finnish skills.
@@ -1169,7 +1255,7 @@
# From Konstantin Hyppönen (2014-06-13):
# [Heikki Oja's book Aikakirja 2013]
-# http://almanakka.helsinki.fi/images/aikakirja/Aikakirja2013kokonaan.pdf
+# https://almanakka.helsinki.fi/images/aikakirja/Aikakirja2013kokonaan.pdf
# pages 104-105, including a scan from a newspaper published on Apr 2 1942
# say that ... [o]n Apr 2 1942, 24 o'clock (which means Apr 3 1942,
# 00:00), clocks were moved one hour forward. The newspaper
@@ -1295,11 +1381,11 @@
# From Markus Kuhn (1998-09-29):
# The German time zone web site by the Physikalisch-Technische
# Bundesanstalt contains DST information back to 1916.
-# [See tz-link.htm for the URL.]
+# [See tz-link.html for the URL.]
# From Jörg Schilling (2002-10-23):
# In 1945, Berlin was switched to Moscow Summer time (GMT+4) by
-# http://www.dhm.de/lemo/html/biografien/BersarinNikolai/
+# https://www.dhm.de/lemo/html/biografien/BersarinNikolai/
# General [Nikolai] Bersarin.
# From Paul Eggert (2003-03-08):
@@ -1392,7 +1478,7 @@
1:00 Greece CE%sT 1944 Apr 4
2:00 Greece EE%sT 1981
# Shanks & Pottenger say it switched to C-Eur in 1981;
- # go with EU instead, since Greece joined it on Jan 1.
+ # go with EU rules instead, since Greece joined Jan 1.
2:00 EU EE%sT
# Hungary
@@ -1464,21 +1550,21 @@
# http://www.almanak.hi.is/klukkan.html
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Iceland 1917 1919 - Feb 19 23:00 1:00 S
+Rule Iceland 1917 1919 - Feb 19 23:00 1:00 -
Rule Iceland 1917 only - Oct 21 1:00 0 -
Rule Iceland 1918 1919 - Nov 16 1:00 0 -
-Rule Iceland 1921 only - Mar 19 23:00 1:00 S
+Rule Iceland 1921 only - Mar 19 23:00 1:00 -
Rule Iceland 1921 only - Jun 23 1:00 0 -
-Rule Iceland 1939 only - Apr 29 23:00 1:00 S
+Rule Iceland 1939 only - Apr 29 23:00 1:00 -
Rule Iceland 1939 only - Oct 29 2:00 0 -
-Rule Iceland 1940 only - Feb 25 2:00 1:00 S
+Rule Iceland 1940 only - Feb 25 2:00 1:00 -
Rule Iceland 1940 1941 - Nov Sun>=2 1:00s 0 -
-Rule Iceland 1941 1942 - Mar Sun>=2 1:00s 1:00 S
+Rule Iceland 1941 1942 - Mar Sun>=2 1:00s 1:00 -
# 1943-1946 - first Sunday in March until first Sunday in winter
-Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 S
+Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 -
Rule Iceland 1942 1948 - Oct Sun>=22 1:00s 0 -
# 1947-1967 - first Sunday in April until first Sunday in winter
-Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 S
+Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 -
# 1949 and 1967 Oct transitions delayed by 1 week
Rule Iceland 1949 only - Oct 30 1:00s 0 -
Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 -
@@ -1524,7 +1610,7 @@
# From Paul Eggert (2016-10-27):
# Go with INRiM for DST rules, except as corrected by Inglis for 1944
# for the Kingdom of Italy. This is consistent with Renzo Baldini.
-# Model Rome's occupation by using using C-Eur rules from 1943-09-10
+# Model Rome's occupation by using C-Eur rules from 1943-09-10
# to 1944-06-04; although Rome was an open city during this period, it
# was effectively controlled by Germany.
#
@@ -1839,14 +1925,14 @@
# Following Moldova and neighboring Ukraine- Transnistria (Pridnestrovie)-
# Tiraspol will go back to winter time on October 30, 2011.
# News from Moldova (in russian):
-# http://ru.publika.md/link_317061.html
+# https://ru.publika.md/link_317061.html
# From Roman Tudos (2015-07-02):
# http://lex.justice.md/index.php?action=view&view=doc&lang=1&id=355077
# From Paul Eggert (2015-07-01):
# The abovementioned official link to IGO1445-868/2014 states that
# 2014-10-26's fallback transition occurred at 03:00 local time. Also,
-# http://www.trm.md/en/social/la-30-martie-vom-trece-la-ora-de-vara
+# https://www.trm.md/en/social/la-30-martie-vom-trece-la-ora-de-vara
# says the 2014-03-30 spring-forward transition was at 02:00 local time.
# Guess that since 1997 Moldova has switched one hour before the EU.
@@ -1918,7 +2004,7 @@
# Amsterdam mean time.
# The data entries before 1945 are taken from
-# http://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm
+# https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time
@@ -1944,7 +2030,7 @@
Rule Neth 1945 only - Apr 2 2:00s 1:00 S
Rule Neth 1945 only - Sep 16 2:00s 0 -
#
-# Amsterdam Mean Time was +00:19:32.13 exactly, but the .13 is omitted
+# Amsterdam Mean Time was +00:19:32.13, but the .13 is omitted
# below because the current format requires GMTOFF to be an integer.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Amsterdam 0:19:32 - LMT 1835
@@ -1999,7 +2085,7 @@
# so it must have diverged from Oslo time during the war, as Oslo was
# keeping Berlin time.
#
-# <http://home.no.net/janmayen/history.htm> says that the meteorologists
+# <https://www.jan-mayen.no/history.htm> says that the meteorologists
# burned down their station in 1940 and left the island, but returned in
# 1941 with a small Norwegian garrison and continued operations despite
# frequent air attacks from Germans. In 1943 the Americans established a
@@ -2037,7 +2123,7 @@
Rule Poland 1945 only - Nov 1 0:00 0 -
# For 1946 on the source is Kazimierz Borkowski,
# Toruń Center for Astronomy, Dept. of Radio Astronomy, Nicolaus Copernicus U.,
-# http://www.astro.uni.torun.pl/~kb/Artykuly/U-PA/Czas2.htm#tth_tAb1
+# https://www.astro.uni.torun.pl/~kb/Artykuly/U-PA/Czas2.htm#tth_tAb1
# Thanks to Przemysław Augustyniak (2005-05-28) for this reference.
# He also gives these further references:
# Mon Pol nr 13, poz 162 (1995) <http://www.abc.com.pl/serwis/mp/1995/0162.htm>
@@ -2068,15 +2154,19 @@
1:00 EU CE%sT
# Portugal
-#
+
# From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne:
# According to a Portuguese decree (1911-05-26)
-# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
+# https://dre.pt/application/dir/pdf1sdip/1911/05/12500/23132313.pdf
# Lisbon was at -0:36:44.68, but switched to GMT on 1912-01-01 at 00:00.
-# Round the old offset to -0:36:45. This agrees with Willett but disagrees
-# with Shanks, who says the transition occurred on 1911-05-24 at 00:00 for
-# Europe/Lisbon, Atlantic/Azores, and Atlantic/Madeira.
+# Round the old offset to -0:36:45. This agrees with Willett....
#
+# From Michael Deckers (2018-02-15):
+# article 5 [of the 1911 decree; Deckers's translation] ...:
+# These dispositions shall enter into force at the instant at which,
+# according to the 2nd article, the civil day January 1, 1912 begins,
+# all clocks therefore having to be advanced or set back correspondingly ...
+
# From Rui Pedro Salgueiro (1992-11-12):
# Portugal has recently (September, 27) changed timezone
# (from WET to MET or CET) to harmonize with EEC.
@@ -2091,7 +2181,7 @@
# IATA SSIM (1991/1992) reports that the Azores were at -1:00.
# IATA SSIM (1993-02) says +0:00; later issues (through 1996-09) say -1:00.
# Guess that the Azores changed to EU rules in 1992 (since that's when Portugal
-# harmonized with the EU), and that they stayed +0:00 that winter.
+# harmonized with EU rules), and that they stayed +0:00 that winter.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# DSH writes that despite Decree 1,469 (1915), the change to the clocks was not
@@ -2159,7 +2249,7 @@
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Lisbon -0:36:45 - LMT 1884
- -0:36:45 - LMT 1912 Jan 1 # Lisbon Mean Time
+ -0:36:45 - LMT 1912 Jan 1 0:00u # Lisbon MT
0:00 Port WE%sT 1966 Apr 3 2:00
1:00 - CET 1976 Sep 26 1:00
0:00 Port WE%sT 1983 Sep 25 1:00s
@@ -2168,7 +2258,7 @@
0:00 EU WE%sT
# This Zone can be simplified once we assume zic %z.
Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada
- -1:54:32 - HMT 1912 Jan 1 # Horta Mean Time
+ -1:54:32 - HMT 1912 Jan 1 2:00u # Horta MT
-2:00 Port -02/-01 1942 Apr 25 22:00s
-2:00 Port +00 1942 Aug 15 22:00s
-2:00 Port -02/-01 1943 Apr 17 22:00s
@@ -2184,7 +2274,7 @@
-1:00 EU -01/+00
# This Zone can be simplified once we assume zic %z.
Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal
- -1:07:36 - FMT 1912 Jan 1 # Funchal Mean Time
+ -1:07:36 - FMT 1912 Jan 1 1:00u # Funchal MT
-1:00 Port -01/+00 1942 Apr 25 22:00s
-1:00 Port +01 1942 Aug 15 22:00s
-1:00 Port -01/+00 1943 Apr 17 22:00s
@@ -2253,7 +2343,7 @@
# 2011 No. 725" and contains no other dates or "effective date" information.
#
# Another source is
-# http://www.rg.ru/2011/09/06/chas-zona-dok.html
+# https://rg.ru/2011/09/06/chas-zona-dok.html
# which, according to translate.google.com, begins "Resolution of the
# Government of the Russian Federation on August 31, 2011 N 725" and also
# contains "Date first official publication: September 6, 2011 Posted on:
@@ -2261,7 +2351,7 @@
# does not contain any "effective date" information.
#
# Another source is
-# http://en.wikipedia.org/wiki/Oymyakonsky_District#cite_note-RuTime-7
+# https://en.wikipedia.org/wiki/Oymyakonsky_District#cite_note-RuTime-7
# which, in note 8, contains "Resolution No. 725 of August 31, 2011...
# Effective as of after 7 days following the day of the official publication"
# but which does not contain any reference to September 6, 2011.
@@ -2297,7 +2387,7 @@
# http://itar-tass.com/obschestvo/1333711
# http://www.pravo.gov.ru:8080/page.aspx?111660
# http://www.kremlin.ru/acts/46279
-# From October 26, 2014 the new Russian time zone map will looks like this:
+# From October 26, 2014 the new Russian time zone map will look like this:
# http://www.worldtimezone.com/dst_news/dst_news_russia-map-2014-07.html
# From Paul Eggert (2006-03-22):
@@ -2339,19 +2429,43 @@
# administratively part of Sakhalin oblast', they appear to have
# remained on UTC+11 along with Magadan.
+# From Marat Nigametzianov (2018-07-16):
+# this is link to order from 1956 about timezone in USSR
+# http://astro.uni-altai.ru/~orion/blog/2011/11/novyie-granitsyi-chasovyih-poyasov-v-sssr/
+#
+# From Paul Eggert (2018-07-16):
+# Perhaps someone could translate the above-mentioned link and use it
+# to correct our data for the ex-Soviet Union. It cites the following:
+# «Поясное время и новые границы часовых поясов» / сост. П.Н. Долгов,
+# отв. ред. Г.Д. Бурдун - М: Комитет стандартов, мер и измерительных
+# приборов при Совете Министров СССР, Междуведомственная комиссия
+# единой службы времени, 1956 г.
+# This book looks like it would be a helpful resource for the Soviet
+# Union through 1956. Although a copy was in the Scientific Library
+# of Tomsk State University, I have not been able to track down a copy nearby.
+#
+# From Stepan Golosunov (2018-07-21):
+# http://astro.uni-altai.ru/~orion/blog/2015/05/center-reforma-ischisleniya-vremeni-br-na-territorii-sssr-v-1957-godu-center/
+# says that the 1956 decision to change time belts' borders was not
+# implemented as planned in 1956 and the change happened in 1957.
+# There is also the problem that actual time zones were different from
+# the official time belts (and from many time belts' maps) as there were
+# numerous exceptions to application of time belt rules. For example,
+# https://ru.wikipedia.org/wiki/Московское_время#Перемещение_границы_применения_московского_времени_на_восток
+# says that by 1962 there were many regions in the 3rd time belt that
+# were on Moscow time, referring to a 1962 map. By 1989 number of such
+# exceptions grew considerably.
+
# From Tim Parenti (2014-07-06):
# The comments detailing the coverage of each Russian zone are meant to assist
# with maintenance only and represent our best guesses as to which regions
# are covered by each zone. They are not meant to be taken as an authoritative
# listing. The region codes listed come from
-# http://en.wikipedia.org/w/?title=Federal_subjects_of_Russia&oldid=611810498
+# https://en.wikipedia.org/w/?title=Federal_subjects_of_Russia&oldid=611810498
# and are used for convenience only; no guarantees are made regarding their
# future stability. ISO 3166-2:RU codes are also listed for first-level
# divisions where available.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-
-
# From Tim Parenti (2014-07-03):
# Europe/Kaliningrad covers...
# 39 RU-KGD Kaliningrad Oblast
@@ -2509,7 +2623,7 @@
# http://www.kaliningradka.ru/site_pc/cherez/index.php?ELEMENT_ID=40091
# says that Kaliningrad decided not to be an exception 2 days before the
# 1991-03-31 switch and one person at
-# http://izhevsk.ru/forum_light_message/50/682597-m8369040.html
+# https://izhevsk.ru/forum_light_message/50/682597-m8369040.html
# says he remembers that Samara opted out of the 1992-01-19 exception
# 2 days before the switch.
#
@@ -2522,13 +2636,13 @@
# From Vladimir Karpinsky (2014-07-08):
# LMT in Moscow (before Jul 3, 1916) is 2:30:17, that was defined by Moscow
-# Observatory (coordinates: 55 deg. 45'29.70", 37 deg. 34'05.30")....
+# Observatory (coordinates: 55° 45' 29.70", 37° 34' 05.30")....
# LMT in Moscow since Jul 3, 1916 is 2:31:01 as a result of new standard.
# (The info is from the book by Byalokoz ... p. 18.)
# The time in St. Petersburg as capital of Russia was defined by
# Pulkov observatory, near St. Petersburg. In 1916 LMT Moscow
# was synchronized with LMT St. Petersburg (+30 minutes), (Pulkov observatory
-# coordinates: 59 deg. 46'18.70", 30 deg. 19'40.70") so 30 deg. 19'40.70" >
+# coordinates: 59° 46' 18.70", 30° 19' 40.70") so 30° 19' 40.70" >
# 2h01m18.7s = 2:01:19. LMT Moscow = LMT St.Petersburg + 30m 2:01:19 + 0:30 =
# 2:31:19 ...
#
@@ -2581,7 +2695,7 @@
3:00 - MSK 1997 Mar lastSun 1:00u
# From Alexander Krivenyshev (2014-03-17):
# time change at 2:00 (2am) on March 30, 2014
-# http://vz.ru/news/2014/3/17/677464.html
+# https://vz.ru/news/2014/3/17/677464.html
# From Paul Eggert (2014-03-30):
# Simferopol and Sevastopol reportedly changed their central town clocks
# late the previous day, but this appears to have been ceremonial
@@ -2619,6 +2733,15 @@
# 34 RU-VGG Volgograd Oblast
# The 1988 transition is from USSR act No. 5 (1988-01-04).
+# From Alexander Fetisov (2018-09-20):
+# Volgograd region in southern Russia (Europe/Volgograd) change
+# timezone from UTC+3 to UTC+4 from 28oct2018.
+# http://sozd.parliament.gov.ru/bill/452878-7
+#
+# From Stepan Golosunov (2018-10-11):
+# The law has been published today on
+# http://publication.pravo.gov.ru/Document/View/0001201810110037
+
Zone Europe/Volgograd 2:57:40 - LMT 1920 Jan 3
3:00 - +03 1930 Jun 21
4:00 - +04 1961 Nov 11
@@ -2627,7 +2750,8 @@
4:00 - +04 1992 Mar 29 2:00s
3:00 Russia +03/+04 2011 Mar 27 2:00s
4:00 - +04 2014 Oct 26 2:00s
- 3:00 - +03
+ 3:00 - +03 2018 Oct 28 2:00s
+ 4:00 - +04
# From Paul Eggert (2016-11-11):
# Europe/Saratov covers:
@@ -2764,11 +2888,11 @@
# suggests that Altai Republic transitioned to Moscow+3 on
# 1995-05-28.
#
-# http://regnum.ru/news/society/1957270.html
+# https://regnum.ru/news/society/1957270.html
# has some historical data for Altai Krai:
-# before 1957: west part on UTC+6, east on UTC+7
-# after 1957: UTC+7
-# since 1995: UTC+6
+# before 1957: west part on UT+6, east on UT+7
+# after 1957: UT+7
+# since 1995: UT+6
# http://barnaul.rusplt.ru/index/pochemu_altajskij_kraj_okazalsja_v_neprivychnom_chasovom_pojase-17648.html
# confirms that and provides more details including 1995-05-28 transition date.
@@ -3138,8 +3262,8 @@
# districts, but have very similar populations. In fact, Wikipedia currently
# lists them both as having 3528 people, exactly 1668 males and 1860 females
# each! (Yikes!)
-# http://en.wikipedia.org/w/?title=Srednekolymsky_District&oldid=603435276
-# http://en.wikipedia.org/w/?title=Verkhnekolymsky_District&oldid=594378493
+# https://en.wikipedia.org/w/?title=Srednekolymsky_District&oldid=603435276
+# https://en.wikipedia.org/w/?title=Verkhnekolymsky_District&oldid=594378493
# Assume this is a mistake, albeit an amusing one.
#
# Looking at censuses, the populations of the two municipalities seem to have
@@ -3316,7 +3440,8 @@
#Rule NatSpain 1937 only - May 22 23:00 1:00 S
#Rule NatSpain 1937 1938 - Oct Sat>=1 24:00s 0 -
#Rule NatSpain 1938 only - Mar 26 23:00 1:00 S
-# The following rules are copied from Morocco from 1967 through 1978.
+# The following rules are copied from Morocco from 1967 through 1978,
+# except with "S" letters.
Rule SpainAfrica 1967 only - Jun 3 12:00 1:00 S
Rule SpainAfrica 1967 only - Oct 1 0:00 0 -
Rule SpainAfrica 1974 only - Jun 24 0:00 1:00 S
@@ -3336,6 +3461,7 @@
0:00 1:00 WEST 1918 Oct 7 23:00
0:00 - WET 1924
0:00 Spain WE%sT 1929
+ 0:00 - WET 1967 # Help zishrink.awk.
0:00 SpainAfrica WE%sT 1984 Mar 16
1:00 - CET 1986
1:00 EU CE%sT
@@ -3357,7 +3483,7 @@
# three degrees, or twelve minutes of time, to the west of the
# meridian of the Observatory of Stockholm". The law is dated 1878-05-31.
#
-# The observatory at that time had the meridian 18 degrees 03' 30"
+# The observatory at that time had the meridian 18° 03' 30"
# eastern longitude = 01:12:14 in time. Less 12 minutes gives the
# national standard time as 01:00:14 ahead of GMT....
#
@@ -3460,8 +3586,8 @@
#
# From Alois Treindl (2013-09-11):
# The Federal regulations say
-# http://www.admin.ch/opc/de/classified-compilation/20071096/index.html
-# ... the meridian for Bern mean time ... is 7 degrees 26' 22.50".
+# https://www.admin.ch/opc/de/classified-compilation/20071096/index.html
+# ... the meridian for Bern mean time ... is 7° 26' 22.50".
# Expressed in time, it is 0h29m45.5s.
# From Pierre-Yves Berger (2013-09-11):
@@ -3521,7 +3647,7 @@
# http://www.resmigazete.gov.tr/eskiler/2001/03/20010324.htm#2 - for 2001
# http://www.resmigazete.gov.tr/eskiler/2002/03/20020316.htm#2 - for 2002-2006
# From Paul Eggert (2016-09-25):
-# Prefer the above sources to Shanks & Pottenger for time stamps after 1985.
+# Prefer the above sources to Shanks & Pottenger for timestamps after 1985.
# From Steffen Thorsen (2007-03-09):
# Starting 2007 though, it seems that they are adopting EU's 1:00 UTC
@@ -3537,9 +3663,9 @@
# According to the articles linked below, Turkey will change into summer
# time zone (GMT+3) on March 28, 2011 at 3:00 a.m. instead of March 27.
# This change is due to a nationwide exam on 27th.
-# http://www.worldbulletin.net/?aType=haber&ArticleID=70872
+# https://www.worldbulletin.net/?aType=haber&ArticleID=70872
# Turkish:
-# http://www.hurriyet.com.tr/ekonomi/17230464.asp?gid=373
+# https://www.hurriyet.com.tr/yaz-saati-uygulamasi-bir-gun-ileri-alindi-17230464
# From Faruk Pasin (2014-02-14):
# The DST for Turkey has been changed for this year because of the
@@ -3576,6 +3702,17 @@
# The change is permanent, so this is the new standard time in Turkey.
# It takes effect today, which is not much notice.
+# From Kıvanç Yazan (2017-10-28):
+# Turkey will go back to Daylight Saving Time starting 2018-10.
+# http://www.resmigazete.gov.tr/eskiler/2017/10/20171028-5.pdf
+#
+# From Even Scharning (2017-11-08):
+# ... today it was announced that the DST will become "continuous":
+# http://www.hurriyet.com.tr/son-dakika-yaz-saati-uygulamasi-surekli-hale-geldi-40637482
+# From Paul Eggert (2017-11-08):
+# Although Google Translate misfires on that source, it looks like
+# Turkey reversed last month's decision, and so will stay at +03.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Turkey 1916 only - May 1 0:00 1:00 S
Rule Turkey 1916 only - Oct 1 0:00 0 -
@@ -3675,7 +3812,7 @@
# http://www.segodnya.ua/news/14290482.html
#
# Deputies cancelled the winter time (in Russian)
-# http://www.pravda.com.ua/rus/news/2011/09/20/6600616/
+# https://www.pravda.com.ua/rus/news/2011/09/20/6600616/
#
# From Philip Pizzey (2011-10-18):
# Today my Ukrainian colleagues have informed me that the
@@ -3720,10 +3857,29 @@
# * Ukrainian Government's Resolution of 20.03.1992, No. 139.
# http://www.uazakon.com/documents/date_8u/pg_grcasa.htm
+# From Paul Eggert (2018-10-03):
+# As is usual in tzdb, Ukrainian zones use the most common English spellings.
+# For example, tzdb uses Europe/Kiev, as "Kiev" is the most common spelling in
+# English for Ukraine's capital, even though it is certainly wrong as a
+# transliteration of the Ukrainian "Київ". This is similar to tzdb's use of
+# Europe/Prague, which is certainly wrong as a transliteration of the Czech
+# "Praha". ("Kiev" came from old Slavic via Russian to English, and "Prague"
+# came from old Slavic via French to English, so the two cases have something
+# in common.) Admittedly English-language spelling of Ukrainian names is
+# controversial, and some day "Kyiv" may become substantially more popular in
+# English; in the meantime, stick with the traditional English "Kiev" as that
+# means less disruption for our users.
+#
+# Anyway, none of the common English-language spellings (Kiev, Kyiv, Kieff,
+# Kijeff, Kijev, Kiyef, Kiyeff) do justice to the common pronunciation in
+# Ukrainian, namely [ˈkɪjiu̯] (IPA). This pronunciation has nothing like an
+# English "v" or "f", and instead trails off with what an English-speaker
+# would call a demure "oo" sound, and it would would be better anglicized as
+# "Kuiyu". Here's a sound file, if you would like to do as the Kuiyuvians do:
+# https://commons.wikimedia.org/wiki/File:Uk-Київ.ogg
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-# Most of Ukraine since 1970 has been like Kiev.
-# "Kyiv" is the transliteration of the Ukrainian name, but
-# "Kiev" is more common in English.
+# This represents most of Ukraine. See above for the spelling of "Kiev".
Zone Europe/Kiev 2:02:04 - LMT 1880
2:02:04 - KMT 1924 May 2 # Kiev Mean Time
2:00 - EET 1930 Jun 21
diff --git a/tools/java/org/unicode/cldr/util/data/leapseconds b/tools/java/org/unicode/cldr/util/data/leapseconds
index 1ebf70f..325f3a1 100644
--- a/tools/java/org/unicode/cldr/util/data/leapseconds
+++ b/tools/java/org/unicode/cldr/util/data/leapseconds
@@ -3,22 +3,28 @@
# This file is in the public domain.
# This file is generated automatically from the data in the public-domain
-# leap-seconds.list file available from most NIST time servers.
-# If the URL <ftp://time.nist.gov/pub/leap-seconds.list> does not work,
-# you should be able to pick up leap-seconds.list from a secondary NIST server.
-# See <http://tf.nist.gov/tf-cgi/servers.cgi> for a list of secondary servers.
+# leap-seconds.list file, which can be copied from
+# <ftp://ftp.nist.gov/pub/time/leap-seconds.list>
+# or <ftp://ftp.boulder.nist.gov/pub/time/leap-seconds.list>
+# or <ftp://tycho.usno.navy.mil/pub/ntp/leap-seconds.list>.
# For more about leap-seconds.list, please see
# The NTP Timescale and Leap Seconds
-# http://www.eecis.udel.edu/~mills/leap.html
+# <https://www.eecis.udel.edu/~mills/leap.html>.
# The International Earth Rotation and Reference Systems Service
# periodically uses leap seconds to keep UTC to within 0.9 s of UT1
-# (which measures the true angular orientation of the earth in space); see
-# Terry J Quinn, The BIPM and the accurate measure of time,
-# Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>.
+# (which measures the true angular orientation of the earth in space)
+# and publishes leap second data in a copyrighted file
+# <https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat>.
+# See: Levine J. Coordinated Universal Time and the leap second.
+# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995
+# <https://ieeexplore.ieee.org/document/7909995>.
+
# There were no leap seconds before 1972, because the official mechanism
# accounting for the discrepancy between atomic time and the earth's rotation
-# did not exist until the early 1970s.
+# did not exist. The first ("1 Jan 1972") data line in leap-seconds.list
+# does not denote a leap second; it denotes the start of the current definition
+# of UTC.
# The correction (+ or -) is made at the given time, so lines
# will typically look like:
@@ -26,10 +32,7 @@
# or
# Leap YEAR MON DAY 23:59:59 - R/S
-# If the leapsecond is Rolling (R) the given time is local time.
-# If the leapsecond is Stationary (S) the given time is UTC.
-
-# Leap YEAR MONTH DAY HH:MM:SS CORR R/S
+# If the leap second is Rolling (R) the given time is local time (unused here).
Leap 1972 Jun 30 23:59:60 + S
Leap 1972 Dec 31 23:59:60 + S
Leap 1973 Dec 31 23:59:60 + S
@@ -58,5 +61,9 @@
Leap 2015 Jun 30 23:59:60 + S
Leap 2016 Dec 31 23:59:60 + S
-# Updated through IERS Bulletin C53
-# File expires on: 28 December 2017
+# POSIX timestamps for the data in this file:
+#updated 1467936000
+#expires 1561680000
+
+# Updated through IERS Bulletin C56
+# File expires on: 28 June 2019
diff --git a/tools/java/org/unicode/cldr/util/data/northamerica b/tools/java/org/unicode/cldr/util/data/northamerica
index 6ede9dc..faaf979 100644
--- a/tools/java/org/unicode/cldr/util/data/northamerica
+++ b/tools/java/org/unicode/cldr/util/data/northamerica
@@ -1,3 +1,5 @@
+# tzdb data for North and Central America and environs
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
@@ -25,7 +27,7 @@
# in New York City (1869-10). His 1870 proposal was based on Washington, DC,
# but in 1872-05 he moved the proposed origin to Greenwich.
-# From Paul Eggert (2016-09-21):
+# From Paul Eggert (2018-03-20):
# Dowd's proposal left many details unresolved, such as where to draw
# lines between time zones. The key individual who made time zones
# work in the US was William Frederick Allen - railway engineer,
@@ -36,10 +38,9 @@
# to the General Time Convention on 1883-04-11, saying that his plan
# meant "local time would be practically abolished" - a plus for
# railway scheduling. By the next convention on 1883-10-11 nearly all
-# railroads had agreed and it took effect on 1883-11-18 at 12:00.
-# That Sunday was called the "day of two noons", as the eastern parts
-# of the new zones observed noon twice. Allen witnessed the
-# transition in New York City, writing:
+# railroads had agreed and it took effect on 1883-11-18. That Sunday
+# was called the "day of two noons", as some locations observed noon
+# twice. Allen witnessed the transition in New York City, writing:
#
# I heard the bells of St. Paul's strike on the old time. Four
# minutes later, obedient to the electrical signal from the Naval
@@ -49,7 +50,7 @@
#
# Most of the US soon followed suit. See:
# Bartky IR. The adoption of standard time. Technol Cult 1989 Jan;30(1):25-56.
-# http://dx.doi.org/10.2307/3105430
+# https://dx.doi.org/10.2307/3105430
# From Paul Eggert (2005-04-16):
# That 1883 transition occurred at 12:00 new time, not at 12:00 old time.
@@ -105,10 +106,13 @@
# Last night I heard part of a rebroadcast of a 1945 Arch Oboler radio drama.
# In the introduction, Oboler spoke of "Eastern Peace Time."
# An AltaVista search turned up:
-# http://rowayton.org/rhs/hstaug45.html
+# https://web.archive.org/web/20000926032210/http://rowayton.org/rhs/hstaug45.html
# "When the time is announced over the radio now, it is 'Eastern Peace
# Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful."
# (August 1945) by way of confirmation.
+#
+# From Paul Eggert (2017-09-23):
+# This was the V-J Day issue of the Clamdigger, a Rowayton, CT newsletter.
# From Joseph Gallant citing
# George H. Douglas, _The Early Days of Radio Broadcasting_ (1987):
@@ -257,7 +261,7 @@
# HST and HDT are standardized abbreviations for Hawaii-Aleutian
# standard and daylight times. See section 9.47 (p 234) of the
# U.S. Government Printing Office Style Manual (2008)
-# http://www.gpo.gov/fdsys/pkg/GPO-STYLEMANUAL-2008/pdf/GPO-STYLEMANUAL-2008.pdf
+# https://www.gpo.gov/fdsys/pkg/GPO-STYLEMANUAL-2008/pdf/GPO-STYLEMANUAL-2008.pdf
# From Arthur David Olson, 2005-08-09
# The following was signed into law on 2005-08-08.
@@ -345,8 +349,20 @@
# Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota,
# western Tennessee, most of Texas, Wisconsin
+# From Paul Eggert (2018-01-07):
+# In 1869 the Chicago Astronomical Society contracted with the city to keep
+# time. Though delayed by the Great Fire, by 1880 a wire ran from the
+# Dearborn Observatory (on the University of Chicago campus) to City Hall,
+# which then sent signals to police and fire stations. However, railroads got
+# their time signals from the Allegheny Observatory, the Madison Observatory,
+# the Ann Arbor Observatory, etc., so their clocks did not agree with each
+# other or with the city's official time. The confusion took some years to
+# clear up. See:
+# Moser M. How Chicago gave America its time zones. Chicago. 2018-01-04.
+# http://www.chicagomag.com/city-life/January-2018/How-Chicago-Gave-America-Its-Time-Zones/
+
# From Larry M. Smith (2006-04-26) re Wisconsin:
-# http://www.legis.state.wi.us/statutes/Stat0175.pdf ...
+# https://docs.legis.wisconsin.gov/statutes/statutes/175.pdf
# is currently enforced at the 01:00 time of change. Because the local
# "bar time" in the state corresponds to 02:00, a number of citations
# are issued for the "sale of class 'B' alcohol after prohibited
@@ -355,7 +371,7 @@
# From Douglas R. Bomberg (2007-03-12):
# Wisconsin has enacted (nearly eleventh-hour) legislation to get WI
# Statue 175 closer in synch with the US Congress' intent....
-# http://www.legis.state.wi.us/2007/data/acts/07Act3.pdf
+# https://docs.legis.wisconsin.gov/2007/related/acts/3
# From an email administrator of the City of Fort Pierre, SD (2015-12-21):
# Fort Pierre is technically located in the Mountain time zone as is
@@ -402,15 +418,14 @@
# ...it appears that Mercer County, North Dakota, changed from the
# mountain time zone to the central time zone at the last transition from
# daylight-saving to standard time (on Nov. 7, 2010):
-# http://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm
+# https://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm
# http://www.bismarcktribune.com/news/local/article_1eb1b588-c758-11df-b472-001cc4c03286.html
# From Andy Lipscomb (2011-01-24):
# ...according to the Census Bureau, the largest city is Beulah (although
# it's commonly referred to as Beulah-Hazen, with Hazen being the next
# largest city in Mercer County). Google Maps places Beulah's city hall
-# at 47 degrees 15' 51" N, 101 degrees 46' 40" W, which yields an offset
-# of 6h47'07".
+# at 47° 15' 51" N, 101° 46' 40" W, which yields an offset of 6h47'07".
Zone America/North_Dakota/Beulah -6:47:07 - LMT 1883 Nov 18 12:12:53
-7:00 US M%sT 2010 Nov 7 2:00
@@ -424,6 +439,19 @@
# western South Dakota, far western Texas (El Paso County, Hudspeth County,
# and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming
#
+# From Paul Eggert (2018-10-25):
+# On 1921-03-04 federal law placed all of Texas into the central time zone.
+# However, El Paso ignored the law for decades and continued to observe
+# mountain time, on the grounds that that's what they had always done
+# and they weren't about to let the federal government tell them what to do.
+# Eventually the federal government gave in and changed the law on
+# 1970-04-10 to match what El Paso was actually doing. Although
+# that's slightly after our 1970 cutoff, there is no need to create a
+# separate zone for El Paso since they were ignoring the law anyway. See:
+# Long T. El Pasoans were time rebels, fought to stay in Mountain zone.
+# El Paso Times. 2018-10-24 06:40 -06.
+# https://www.elpasotimes.com/story/news/local/el-paso/2018/10/24/el-pasoans-were-time-rebels-fought-stay-mountain-zone/1744509002/
+#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D
Rule Denver 1920 only - Oct lastSun 2:00 0 S
@@ -443,7 +471,7 @@
# California, northern Idaho (Benewah, Bonner, Boundary, Clearwater,
# Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties, Idaho county
# north of the Salmon River, and the towns of Burgdorf and Warren),
-# Nevada (except West Wendover), Oregon (except the northern 3/4 of
+# Nevada (except West Wendover), Oregon (except the northern ¾ of
# Malheur county), and Washington
# From Paul Eggert (2016-08-20):
@@ -453,7 +481,7 @@
# legal time, and is not part of the data here.) See:
# Ross SA. An energy crisis from the past: Northern California in 1948.
# Working Paper No. 8, Institute of Governmental Studies, UC Berkeley,
-# 1973-11. http://escholarship.org/uc/item/8x22k30c
+# 1973-11. https://escholarship.org/uc/item/8x22k30c
#
# In another measure to save electricity, DST was instituted from 1948-03-14
# at 02:01 to 1949-01-16 at 02:00, with the governor having the option to move
@@ -474,8 +502,8 @@
# which established DST from April's last Sunday at 01:00 until September's
# last Sunday at 02:00. This was amended by 1962's Proposition 6, which changed
# the fall-back date to October's last Sunday. See:
-# http://repository.uchastings.edu/cgi/viewcontent.cgi?article=1501&context=ca_ballot_props
-# http://repository.uchastings.edu/cgi/viewcontent.cgi?article=1636&context=ca_ballot_props
+# https://repository.uchastings.edu/cgi/viewcontent.cgi?article=1501&context=ca_ballot_props
+# https://repository.uchastings.edu/cgi/viewcontent.cgi?article=1636&context=ca_ballot_props
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule CA 1948 only - Mar 14 2:01 1:00 D
@@ -492,20 +520,31 @@
# Alaska
# AK%sT is the modern abbreviation for -09 per USNO.
#
-# From Paul Eggert (2001-05-30):
+# From Paul Eggert (2017-06-15):
# Howse writes that Alaska switched from the Julian to the Gregorian calendar,
# and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
-# This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian,
-# also a Friday. Include only the time zone part of this transition,
-# ignoring the switch from Julian to Gregorian, since we can't represent
-# the Julian calendar.
+# On Friday, 1867-10-18 (Gregorian), at precisely 15:30 local time, the
+# Russian forts and fleet at Sitka fired salutes to mark the ceremony of
+# formal transfer. See the Sacramento Daily Union (1867-11-14), p 3, col 2.
+# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=SDU18671114.2.12.1
+# Sitka workers did not change their calendars until Sunday, 1867-10-20,
+# and so celebrated two Sundays that week. See: Ahllund T (tr Hallamaa P).
+# From the memoirs of a Finnish workman. Alaska History. 2006 Fall;21(2):1-25.
+# http://alaskahistoricalsociety.org/wp-content/uploads/2016/12/Ahllund-2006-Memoirs-of-a-Finnish-Workman.pdf
+# Include only the time zone part of this transition, ignoring the switch
+# from Julian to Gregorian, since we can't represent the Julian calendar.
#
-# As far as we know, none of the exact locations mentioned below were
+# As far as we know, of the locations mentioned below only Sitka was
# permanently inhabited in 1867 by anyone using either calendar.
-# (Yakutat was colonized by the Russians in 1799, but the settlement
-# was destroyed in 1805 by a Yakutat-kon war party.) However, there
-# were nearby inhabitants in some cases and for our purposes perhaps
-# it's best to simply use the official transition.
+# (Yakutat was colonized by the Russians in 1799, but the settlement was
+# destroyed in 1805 by a Yakutat-kon war party.) Many of Alaska's inhabitants
+# were unaware of the US acquisition of Alaska, much less of any calendar or
+# time change. However, the Russian-influenced part of Alaska did observe
+# Russian time, and it is more accurate to model this than to ignore it.
+# The database format requires an exact transition time; use the Russian
+# salute as a somewhat-arbitrary time for the formal transfer of control for
+# all of Alaska. Sitka's UTC offset is -9:01:13; adjust its 15:30 to the
+# local times of other Alaskan locations so that they change simultaneously.
# From Paul Eggert (2014-07-18):
# One opinion of the early-1980s turmoil in Alaska over time zones and
@@ -558,10 +597,21 @@
# It seems Metlakatla did go off PST on Sunday, November 1, changing
# their time to AKST and are going to follow Alaska's DST, switching
# between AKST and AKDT from now on....
-# http://www.krbd.org/2015/10/30/annette-island-times-they-are-a-changing/
+# https://www.krbd.org/2015/10/30/annette-island-times-they-are-a-changing/
+
+# From Ryan Stanley (2018-11-06):
+# The Metlakatla community in Alaska has decided not to change its
+# clock back an hour starting on November 4th, 2018 (day before yesterday).
+# They will be gmtoff=-28800 year-round.
+# https://www.facebook.com/141055983004923/photos/pb.141055983004923.-2207520000.1541465673./569081370202380/
+
+# From Paul Eggert (2018-12-16):
+# In a 2018-12-11 special election, Metlakatla voted to go back to
+# Alaska time (including daylight saving time) starting next year.
+# https://www.krbd.org/2018/12/12/metlakatla-to-follow-alaska-standard-time-allow-liquor-sales/
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
+Zone America/Juneau 15:02:19 - LMT 1867 Oct 19 15:33:32
-8:57:41 - LMT 1900 Aug 20 12:00
-8:00 - PST 1942
-8:00 US P%sT 1946
@@ -571,7 +621,7 @@
-8:00 US P%sT 1983 Oct 30 2:00
-9:00 US Y%sT 1983 Nov 30
-9:00 US AK%sT
-Zone America/Sitka 14:58:47 - LMT 1867 Oct 18
+Zone America/Sitka 14:58:47 - LMT 1867 Oct 19 15:30
-9:01:13 - LMT 1900 Aug 20 12:00
-8:00 - PST 1942
-8:00 US P%sT 1946
@@ -579,22 +629,24 @@
-8:00 US P%sT 1983 Oct 30 2:00
-9:00 US Y%sT 1983 Nov 30
-9:00 US AK%sT
-Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 18
+Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 19 15:44:55
-8:46:18 - LMT 1900 Aug 20 12:00
-8:00 - PST 1942
-8:00 US P%sT 1946
-8:00 - PST 1969
-8:00 US P%sT 1983 Oct 30 2:00
-8:00 - PST 2015 Nov 1 2:00
+ -9:00 US AK%sT 2018 Nov 4 2:00
+ -8:00 - PST 2019 Mar Sun>=8 3:00
-9:00 US AK%sT
-Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18
+Zone America/Yakutat 14:41:05 - LMT 1867 Oct 19 15:12:18
-9:18:55 - LMT 1900 Aug 20 12:00
-9:00 - YST 1942
-9:00 US Y%sT 1946
-9:00 - YST 1969
-9:00 US Y%sT 1983 Nov 30
-9:00 US AK%sT
-Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18
+Zone America/Anchorage 14:00:24 - LMT 1867 Oct 19 14:31:37
-9:59:36 - LMT 1900 Aug 20 12:00
-10:00 - AST 1942
-10:00 US A%sT 1967 Apr
@@ -602,7 +654,7 @@
-10:00 US AH%sT 1983 Oct 30 2:00
-9:00 US Y%sT 1983 Nov 30
-9:00 US AK%sT
-Zone America/Nome 12:58:21 - LMT 1867 Oct 18
+Zone America/Nome 12:58:22 - LMT 1867 Oct 19 13:29:35
-11:01:38 - LMT 1900 Aug 20 12:00
-11:00 - NST 1942
-11:00 US N%sT 1946
@@ -611,7 +663,7 @@
-11:00 US B%sT 1983 Oct 30 2:00
-9:00 US Y%sT 1983 Nov 30
-9:00 US AK%sT
-Zone America/Adak 12:13:21 - LMT 1867 Oct 18
+Zone America/Adak 12:13:22 - LMT 1867 Oct 19 12:44:35
-11:46:38 - LMT 1900 Aug 20 12:00
-11:00 - NST 1942
-11:00 US N%sT 1946
@@ -647,7 +699,7 @@
# "Hawaiian Time" by Robert C. Schmitt and Doak C. Cox appears on pages 207-225
# of volume 26 of The Hawaiian Journal of History (1992). As of 2010-12-09,
# the article is available at
-# http://evols.library.manoa.hawaii.edu/bitstream/10524/239/2/JL26215.pdf
+# https://evols.library.manoa.hawaii.edu/bitstream/10524/239/2/JL26215.pdf
# and indicates that standard time was adopted effective noon, January
# 13, 1896 (page 218), that in "1933, the Legislature decreed daylight
# saving for the period between the last Sunday of each April and the
@@ -682,9 +734,7 @@
Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00
-10:30 - HST 1933 Apr 30 2:00
-10:30 1:00 HDT 1933 May 21 12:00
- -10:30 - HST 1942 Feb 9 2:00
- -10:30 1:00 HDT 1945 Sep 30 2:00
- -10:30 - HST 1947 Jun 8 2:00
+ -10:30 US H%sT 1947 Jun 8 2:00
-10:00 - HST
# Now we turn to US areas that have diverged from the consensus since 1970.
@@ -746,7 +796,23 @@
# Indiana
#
# For a map of Indiana's time zone regions, see:
-# http://en.wikipedia.org/wiki/Time_in_Indiana
+# https://en.wikipedia.org/wiki/Time_in_Indiana
+#
+# From Paul Eggert (2018-11-30):
+# A brief but entertaining history of time in Indiana describes a 1949 debate
+# in the Indiana House where city legislators (who favored "fast time")
+# tussled with farm legislators (who didn't) over a bill to outlaw DST:
+# "Lacking enough votes, the city faction tries to filibuster until time runs
+# out on the session at midnight, but rural champion Rep. Herbert Copeland,
+# R-Madison, leans over the gallery railing and forces the official clock
+# back to 9 p.m., breaking it in the process. The clock sticks on 9 as the
+# debate rages on into the night. The filibuster finally dies out and the
+# bill passes, while outside the chamber, clocks read 3:30 a.m. In the end,
+# it doesn't matter which side won. The law has no enforcement powers and
+# is simply ignored by fast-time communities."
+# How Indiana went from 'God's time' to split zones and daylight-saving.
+# Indianapolis Star. 2018-11-27 14:58 -05.
+# https://www.indystar.com/story/news/politics/2018/11/27/indianapolis-indiana-time-zone-history-central-eastern-daylight-savings-time/2126300002/
#
# From Paul Eggert (2007-08-17):
# Since 1970, most of Indiana has been like America/Indiana/Indianapolis,
@@ -930,6 +996,13 @@
-5:00 - EST 2006
-5:00 US E%sT
+# From Paul Eggert (2018-03-20):
+# The Louisville & Nashville Railroad's 1883-11-18 change occurred at
+# 10:00 old local time; train were supposed to come to a standstill
+# for precisely 18 minutes. See Bartky Fig. 1 (page 50). It is not
+# clear how this matched civil time in Louisville, so for now continue
+# to assume Louisville switched at noon new local time, like New York.
+#
# Part of Kentucky left its clocks alone in 1974.
# This also includes Clark, Floyd, and Harrison counties in Indiana.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
@@ -973,7 +1046,7 @@
# From Paul Eggert (2001-07-16):
# The final rule was published in the
# Federal Register 65, 160 (2000-08-17), pp 50154-50158.
-# http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2000_register&docid=fr17au00-22
+# https://www.gpo.gov/fdsys/pkg/FR-2000-08-17/html/00-20854.htm
#
Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36
-6:00 US C%sT 1946
@@ -999,7 +1072,7 @@
# West Wendover, NV officially switched from Pacific to mountain time on
# 1999-10-31. See the
# Federal Register 64, 203 (1999-10-21), pp 56705-56707.
-# http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=fr21oc99-15
+# https://www.gpo.gov/fdsys/pkg/FR-1999-10-21/html/99-27240.htm
# However, the Federal Register says that West Wendover already operated
# on mountain time, and the rule merely made this official;
# hence a separate tz entry is not needed.
@@ -1029,12 +1102,23 @@
# one hour in 1914." This change is not in Shanks. We have no more
# info, so omit this for now.
#
+# From Paul Eggert (2017-07-26):
+# Although Shanks says Detroit observed DST in 1967 from 06-14 00:01
+# until 10-29 00:01, I now see multiple reports that this is incorrect.
+# For example, according to a 50-year anniversary report about the 1967
+# Detroit riots and a major-league doubleheader on 1967-07-23, "By the time
+# the last fly ball of the doubleheader settled into the glove of leftfielder
+# Lenny Green, it was after 7 p.m. Detroit did not observe daylight saving
+# time, so light was already starting to fail. Twilight was made even deeper
+# by billowing columns of smoke that ascended in an unbroken wall north of the
+# ballpark." See: Dow B. Detroit '67: As violence unfolded, Tigers played two
+# at home vs. Yankees. Detroit Free Press 2017-07-23.
+# https://www.freep.com/story/sports/mlb/tigers/2017/07/23/detroit-tigers-1967-riot-new-york-yankees/499951001/
+#
# Most of Michigan observed DST from 1973 on, but was a bit late in 1975.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D
Rule Detroit 1948 only - Sep lastSun 2:00 0 S
-Rule Detroit 1967 only - Jun 14 2:00 1:00 D
-Rule Detroit 1967 only - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Detroit -5:32:11 - LMT 1905
-6:00 - CST 1915 May 15 2:00
@@ -1098,7 +1182,7 @@
# [PDF] (1914-03)
#
# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
-# <http://www.jstor.org/stable/1774359>.
+# <https://www.jstor.org/stable/1774359>.
#
# See the 'europe' file for Greenland.
@@ -1144,19 +1228,19 @@
# The British Columbia government announced yesterday that it will
# adjust daylight savings next year to align with changes in the
# U.S. and the rest of Canada....
-# http://www2.news.gov.bc.ca/news_releases_2005-2009/2006AG0014-000330.htm
+# https://archive.news.gov.bc.ca/releases/news_releases_2005-2009/2006AG0014-000330.htm
# ...
# Nova Scotia
# Daylight saving time will be extended by four weeks starting in 2007....
-# http://www.gov.ns.ca/just/regulations/rg2/2006/ma1206.pdf
+# https://www.novascotia.ca/just/regulations/rg2/2006/ma1206.pdf
#
# [For New Brunswick] the new legislation dictates that the time change is to
# be done at 02:00 instead of 00:01.
-# http://www.gnb.ca/0062/acts/BBA-2006/Chap-19.pdf
+# https://www.gnb.ca/0062/acts/BBA-2006/Chap-19.pdf
# ...
# Manitoba has traditionally changed the clock every fall at 03:00.
# As of 2006, the transition is to take place one hour earlier at 02:00.
-# http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php
+# https://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php
# ...
# [Alberta, Ontario, Quebec] will follow US rules.
# http://www.qp.gov.ab.ca/documents/spring/CH03_06.CFM
@@ -1170,7 +1254,7 @@
# http://www.hoa.gov.nl.ca/hoa/bills/Bill0634.htm
# ...
# Yukon
-# http://www.gov.yk.ca/legislation/regs/oic2006_127.pdf
+# https://www.gov.yk.ca/legislation/regs/oic2006_127.pdf
# ...
# N.W.T. will follow US rules. Whoever maintains the government web site
# does not seem to believe in bookmarks. To see the news release, click the
@@ -1191,8 +1275,8 @@
# time and daylight saving time arrangements in Canada circa 1998.
#
# National Research Council Canada maintains info about time zones and DST.
-# http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html
-# http://www.nrc-cnrc.gc.ca/eng/services/time/faq/index.html#Q5
+# https://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html
+# https://www.nrc-cnrc.gc.ca/eng/services/time/faq/index.html#Q5
# Its unofficial information is often taken from Matthews and Vincent.
# From Paul Eggert (2006-06-27):
@@ -1229,11 +1313,13 @@
# Newfoundland and Labrador
-# From Paul Eggert (2000-10-02):
-# Matthews and Vincent (1998) write that Labrador should use NST/NDT,
-# but the only part of Labrador that follows the rules is the
-# southeast corner, including Port Hope Simpson and Mary's Harbour,
-# but excluding, say, Black Tickle.
+# From Paul Eggert (2017-10-14):
+# Legally Labrador should observe Newfoundland time; see:
+# McLeod J. Labrador time - legal or not? St. John's Telegram, 2017-10-07
+# http://www.thetelegram.com/news/local/labrador-time--legal-or-not-154860/
+# Matthews and Vincent (1998) write that the only part of Labrador
+# that follows the rules is the southeast corner, including Port Hope
+# Simpson and Mary's Harbour, but excluding, say, Black Tickle.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule StJohns 1917 only - Apr 8 2:00 1:00 D
@@ -1433,7 +1519,7 @@
# http://www.justice.gouv.qc.ca/english/publications/generale/temps-minganie-a.htm
# that the coastal strip from just east of Natashquan to Blanc-Sablon
# observes Atlantic standard time all year round.
-# http://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en
+# https://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en
# says this common practice was codified into law as of 2007.
# For lack of better info, guess this practice began around 1970, contra to
# Shanks & Pottenger who have this region observing AST/ADT.
@@ -1465,6 +1551,11 @@
# earlier in June).
#
# Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21).
+#
+# From Paul Eggert (2017-07-08):
+# For more on Orillia, see: Daubs K. Bold attempt at daylight saving
+# time became a comic failure in Orillia. Toronto Star 2017-07-08.
+# https://www.thestar.com/news/insight/2017/07/08/bold-attempt-at-daylight-saving-time-became-a-comic-failure-in-orillia.html
# From Paul Eggert (1997-10-17):
# Mark Brader writes that an article in the 1997-10-14 Toronto Star
@@ -1864,7 +1955,7 @@
# manager of the Creston & District Museum. The article was written in May 2009.
# http://www.ilovecreston.com/?p=articles&t=spec&ar=260
# According to the article, Creston has not changed its clocks since June 1918.
-# i.e. Creston has been stuck on UTC-7 for 93 years.
+# i.e. Creston has been stuck on UT-7 for 93 years.
# Dawson Creek, on the other hand, changed its clocks as recently as April 1972.
# Unfortunately the exact date for the time change in June 1918 remains
@@ -1956,7 +2047,7 @@
# * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68,
# c. 7 defines Yukon standard time as UTC-9....
# see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1).
-# [http://canlii.ca/t/7vhg]
+# [https://www.canlii.org/en/ca/laws/stat/rsc-1985-c-i-21/latest/rsc-1985-c-i-21.html]
# * C.O. 1973/214 switched Yukon to PST on 1973-10-28 00:00.
# * O.I.C. 1980/02 established DST.
# * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00.
@@ -2021,7 +2112,7 @@
# hours behind Greenwich Time.
#
# * Yukon Standard Time defined as Pacific Standard Time, YCO 1973/214
-# http://www.canlii.org/en/yk/laws/regu/yco-1973-214/latest/yco-1973-214.html
+# https://www.canlii.org/en/yk/laws/regu/yco-1973-214/latest/yco-1973-214.html
# C.O. 1973/214 INTERPRETATION ACT ...
#
# 1. Effective October 28, 1973 Commissioner's Order 1967/59 is hereby
@@ -2036,7 +2127,7 @@
# http://? - no online source found
#
# * Yukon Daylight Saving Time, YOIC 1987/56
-# http://www.canlii.org/en/yk/laws/regu/yoic-1987-56/latest/yoic-1987-56.html
+# https://www.canlii.org/en/yk/laws/regu/yoic-1987-56/latest/yoic-1987-56.html
# O.I.C. 1987/056 INTERPRETATION ACT ...
#
# In every year between
@@ -2048,7 +2139,7 @@
# Dated ... 9th day of March, A.D., 1987.
#
# * Yukon Daylight Saving Time 2006, YOIC 2006/127
-# http://www.canlii.org/en/yk/laws/regu/yoic-2006-127/latest/yoic-2006-127.html
+# https://www.canlii.org/en/yk/laws/regu/yoic-2006-127/latest/yoic-2006-127.html
# O.I.C. 2006/127 INTERPRETATION ACT ...
#
# 1. In Yukon each year the time for general purposes shall be 7 hours
@@ -2062,7 +2153,7 @@
# 3. This order comes into force January 1, 2007.
#
# * Interpretation Act, RSY 2002, c 125
-# http://www.canlii.org/en/yk/laws/stat/rsy-2002-c-125/latest/rsy-2002-c-125.html
+# https://www.canlii.org/en/yk/laws/stat/rsy-2002-c-125/latest/rsy-2002-c-125.html
# From Rives McDow (1999-09-04):
# Nunavut ... moved ... to incorporate the whole territory into one time zone.
@@ -2105,7 +2196,7 @@
# From Michaela Rodrigue, writing in the
# Nunatsiaq News (1999-11-19):
-# http://www.nunatsiaq.com/archives/nunavut991130/nvt91119_17.html
+# http://www.nunatsiaqonline.ca/archives/nunavut991130/nvt91119_17.html
# Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones,
# central - or Nunavut time - for government offices, and eastern time
# for municipal offices and schools.... Igloolik [was similar but then]
@@ -2123,7 +2214,7 @@
# Central Time and Southampton Island [in the Central zone] is not
# required to use daylight savings.
-# From <http://www.nunatsiaq.com/archives/nunavut001130/nvt21110_02.html>
+# From <http://www.nunatsiaqonline.ca/archives/nunavut001130/nvt21110_02.html>
# Nunavut now has two time zones (2000-11-10):
# The Nunavut government would allow its employees in Kugluktuk and
# Cambridge Bay to operate on central time year-round, putting them
@@ -2454,7 +2545,7 @@
# http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/V2-101209.html
#
# Our page:
-# http://www.timeanddate.com/news/time/north-mexico-dst-change.html
+# https://www.timeanddate.com/news/time/north-mexico-dst-change.html
# From Arthur David Olson (2010-01-20):
# The page
@@ -2873,7 +2964,7 @@
# http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm
#
# Some more background information is posted here:
-# http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html
+# https://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html
#
# The article also says that Cuba has been observing DST since 1963,
# while Shanks (and tzdata) has 1965 as the first date (except in the
@@ -2920,7 +3011,7 @@
# http://granma.co.cu/2011/03/08/nacional/artic01.html
#
# Our info:
-# http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html
+# https://www.timeanddate.com/news/time/cuba-starts-dst-2011.html
#
# From Steffen Thorsen (2011-10-30)
# Cuba will end DST two weeks later this year. Instead of going back
@@ -2930,7 +3021,7 @@
# http://www.radioangulo.cu/noticias/cuba/17105-cuba-restablecera-el-horario-del-meridiano-de-greenwich.html
#
# Our page:
-# http://www.timeanddate.com/news/time/cuba-time-changes-2011.html
+# https://www.timeanddate.com/news/time/cuba-time-changes-2011.html
#
# From Steffen Thorsen (2012-03-01)
# According to Radio Reloj, Cuba will start DST on Midnight between March
@@ -2940,7 +3031,7 @@
# http://www.radioreloj.cu/index.php/noticias-radio-reloj/71-miscelaneas/7529-cuba-aplicara-el-horario-de-verano-desde-el-1-de-abril
#
# Our info on it:
-# http://www.timeanddate.com/news/time/cuba-starts-dst-2012.html
+# https://www.timeanddate.com/news/time/cuba-starts-dst-2012.html
# From Steffen Thorsen (2012-11-03):
# Radio Reloj and many other sources report that Cuba is changing back
@@ -3135,8 +3226,8 @@
# From Steffen Thorsen (2016-03-12):
# Jean Antoine, editor of www.haiti-reference.com informed us that Haiti
# are not going on DST this year. Several other resources confirm this: ...
-# http://www.radiotelevisioncaraibes.com/presse/heure_d_t_pas_de_changement_d_heure_pr_vu_pour_cet_ann_e.html
-# http://www.vantbefinfo.com/changement-dheure-pas-pour-haiti/
+# https://www.radiotelevisioncaraibes.com/presse/heure_d_t_pas_de_changement_d_heure_pr_vu_pour_cet_ann_e.html
+# https://www.vantbefinfo.com/changement-dheure-pas-pour-haiti/
# http://news.anmwe.com/haiti-lheure-nationale-ne-sera-ni-avancee-ni-reculee-cette-annee/
# From Steffen Thorsen (2017-03-12):
@@ -3220,8 +3311,8 @@
# http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Jamaica -5:07:11 - LMT 1890 # Kingston
- -5:07:11 - KMT 1912 Feb # Kingston Mean Time
+Zone America/Jamaica -5:07:10 - LMT 1890 # Kingston
+ -5:07:10 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST 1974
-5:00 US E%sT 1984
-5:00 - EST
@@ -3335,7 +3426,7 @@
# Turks and Caicos
#
# From Chris Dunn in
-# http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=415007
+# https://bugs.debian.org/415007
# (2007-03-15): In the Turks & Caicos Islands (America/Grand_Turk) the
# daylight saving dates for time changes have been adjusted to match
# the recent U.S. change of dates.
@@ -3357,12 +3448,25 @@
# "permanent daylight saving time" by one year....
# http://tcweeklynews.com/time-change-to-go-ahead-this-november-p5437-127.htm
#
+# From the Turks & Caicos Cabinet (2017-07-20), heads-up from Steffen Thorsen:
+# ... agreed to the reintroduction in TCI of Daylight Saving Time (DST)
+# during the summer months and Standard Time, also known as Local
+# Time, during the winter months with effect from April 2018 ...
+# https://www.gov.uk/government/news/turks-and-caicos-post-cabinet-meeting-statement--3
+#
+# From Paul Eggert (2017-08-26):
+# The date of effect of the spring 2018 change appears to be March 11,
+# which makes more sense. See: Hamilton D. Time change back
+# by March 2018 for TCI. Magnetic Media. 2017-08-25.
+# http://magneticmediatv.com/2017/08/time-change-back-by-march-2018-for-tci/
+#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Grand_Turk -4:44:32 - LMT 1890
- -5:07:11 - KMT 1912 Feb # Kingston Mean Time
+ -5:07:10 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST 1979
-5:00 US E%sT 2015 Nov Sun>=1 2:00
- -4:00 - AST
+ -4:00 - AST 2018 Mar 11 3:00
+ -5:00 US E%sT
# British Virgin Is
# Virgin Is
diff --git a/tools/java/org/unicode/cldr/util/data/pacificnew b/tools/java/org/unicode/cldr/util/data/pacificnew
index 7349434..0e6cf07 100644
--- a/tools/java/org/unicode/cldr/util/data/pacificnew
+++ b/tools/java/org/unicode/cldr/util/data/pacificnew
@@ -1,3 +1,5 @@
+# tzdb data for proposed US election time (this file is obsolete)
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
diff --git a/tools/java/org/unicode/cldr/util/data/southamerica b/tools/java/org/unicode/cldr/util/data/southamerica
index 6038c3b..b66cb88 100644
--- a/tools/java/org/unicode/cldr/util/data/southamerica
+++ b/tools/java/org/unicode/cldr/util/data/southamerica
@@ -1,3 +1,5 @@
+# tzdb data for South America and environs
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
@@ -22,10 +24,10 @@
#
# For data circa 1899, a common source is:
# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
-# http://www.jstor.org/stable/1774359
+# https://www.jstor.org/stable/1774359
#
# These tables use numeric abbreviations like -03 and -0330 for
-# integer hour and minute UTC offsets. Although earlier editions used
+# integer hour and minute UT offsets. Although earlier editions used
# alphabetic time zone abbreviations, these abbreviations were
# invented and did not reflect common practice.
@@ -47,28 +49,28 @@
# AR was chosen because they are the ISO letters that represent Argentina.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Arg 1930 only - Dec 1 0:00 1:00 S
+Rule Arg 1930 only - Dec 1 0:00 1:00 -
Rule Arg 1931 only - Apr 1 0:00 0 -
-Rule Arg 1931 only - Oct 15 0:00 1:00 S
+Rule Arg 1931 only - Oct 15 0:00 1:00 -
Rule Arg 1932 1940 - Mar 1 0:00 0 -
-Rule Arg 1932 1939 - Nov 1 0:00 1:00 S
-Rule Arg 1940 only - Jul 1 0:00 1:00 S
+Rule Arg 1932 1939 - Nov 1 0:00 1:00 -
+Rule Arg 1940 only - Jul 1 0:00 1:00 -
Rule Arg 1941 only - Jun 15 0:00 0 -
-Rule Arg 1941 only - Oct 15 0:00 1:00 S
+Rule Arg 1941 only - Oct 15 0:00 1:00 -
Rule Arg 1943 only - Aug 1 0:00 0 -
-Rule Arg 1943 only - Oct 15 0:00 1:00 S
+Rule Arg 1943 only - Oct 15 0:00 1:00 -
Rule Arg 1946 only - Mar 1 0:00 0 -
-Rule Arg 1946 only - Oct 1 0:00 1:00 S
+Rule Arg 1946 only - Oct 1 0:00 1:00 -
Rule Arg 1963 only - Oct 1 0:00 0 -
-Rule Arg 1963 only - Dec 15 0:00 1:00 S
+Rule Arg 1963 only - Dec 15 0:00 1:00 -
Rule Arg 1964 1966 - Mar 1 0:00 0 -
-Rule Arg 1964 1966 - Oct 15 0:00 1:00 S
+Rule Arg 1964 1966 - Oct 15 0:00 1:00 -
Rule Arg 1967 only - Apr 2 0:00 0 -
-Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S
+Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 -
Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 -
-Rule Arg 1974 only - Jan 23 0:00 1:00 S
+Rule Arg 1974 only - Jan 23 0:00 1:00 -
Rule Arg 1974 only - May 1 0:00 0 -
-Rule Arg 1988 only - Dec 1 0:00 1:00 S
+Rule Arg 1988 only - Dec 1 0:00 1:00 -
#
# From Hernan G. Otero (1995-06-26):
# These corrections were contributed by InterSoft Argentina S.A.,
@@ -76,7 +78,7 @@
# Talleres de Hidrografía Naval Argentina
# (Argentine Naval Hydrography Institute)
Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 -
-Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S
+Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 -
#
# From Hernan G. Otero (1995-06-26):
# From this moment on, the law that mandated the daylight saving
@@ -87,7 +89,7 @@
# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,
# which did not result in the switch of a time zone, as they stayed 9 hours
# from the International Date Line.
-Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S
+Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 -
# From Paul Eggert (2007-12-28):
# DST was set to expire on March 5, not March 3, but since it was converted
# to standard time on March 3 it's more convenient for us to pretend that
@@ -190,9 +192,9 @@
# la modificación del huso horario, ya que 2009 nos encuentra con
# crecimiento en la producción y distribución energética."
-Rule Arg 2007 only - Dec 30 0:00 1:00 S
+Rule Arg 2007 only - Dec 30 0:00 1:00 -
Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 -
-Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S
+Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 -
# From Mariano Absatz (2004-05-21):
# Today it was officially published that the Province of Mendoza is changing
@@ -202,12 +204,14 @@
# It's Law No. 7,210. This change is due to a public power emergency, so for
# now we'll assume it's for this year only.
#
-# From Paul Eggert (2014-08-09):
+# From Paul Eggert (2018-01-31):
# Hora de verano para la República Argentina
# http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html
# says that standard time in Argentina from 1894-10-31
# to 1920-05-01 was -4:16:48.25. Go with this more-precise value
-# over Shanks & Pottenger.
+# over Shanks & Pottenger. It is upward compatible with Milne, who
+# says Córdoba time was -4:16:48.2.
+
#
# From Mariano Absatz (2004-06-05):
# These media articles from a major newspaper mostly cover the current state:
@@ -265,8 +269,8 @@
#
# Es inminente que en San Luis atrasen una hora los relojes
# (It is imminent in San Luis clocks one hour delay)
-# http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html
-# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html
+# https://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html
+# http://www.worldtimezone.com/dst_news/dst_news_argentina02.html
# From Jesper Nørgaard Welen (2008-01-18):
# The page of the San Luis provincial government
@@ -381,19 +385,16 @@
# rules...San Luis is still using "Western ARgentina Time" and it got
# stuck on Summer daylight savings time even though the summer is over.
-# From Paul Eggert (2013-09-05):
+# From Paul Eggert (2018-01-23):
# Perhaps San Luis operates on the legal fiction that it is at -04
-# with perpetual summer time, but ordinary usage typically seems to
+# with perpetual daylight saving time, but ordinary usage typically seems to
# just say it's at -03; see, for example,
-# http://es.wikipedia.org/wiki/Hora_oficial_argentina
+# https://es.wikipedia.org/wiki/Hora_oficial_argentina
# We've documented similar situations as being plain changes to
# standard time, so let's do that here too. This does not change UTC
# offsets, only tm_isdst and the time zone abbreviations. One minor
# plus is that this silences a zic complaint that there's no POSIX TZ
-# setting for time stamps past 2038.
-
-# From Paul Eggert (2013-02-21):
-# Milne says Córdoba time was -4:16:48.2. Round to the nearest second.
+# setting for timestamps past 2038.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
#
@@ -529,7 +530,7 @@
# San Luis (SL)
Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 -
-Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S
+Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 -
Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
@@ -579,7 +580,7 @@
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/La_Paz -4:32:36 - LMT 1890
-4:32:36 - CMT 1931 Oct 15 # Calamarca MT
- -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
+ -4:32:36 1:00 BST 1932 Mar 21 # Bolivia ST
-4:00 - -04
# Brazil
@@ -716,7 +717,7 @@
# (Portuguese)
#
# We have a written a short article about it as well:
-# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html
+# https://www.timeanddate.com/news/time/brazil-dst-2008-2009.html
#
# From Alexander Krivenyshev (2011-10-04):
# State Bahia will return to Daylight savings time this year after 8 years off.
@@ -725,7 +726,7 @@
# In Portuguese:
# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html
-# http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
+# https://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
# From Guilherme Bernardes Rodrigues (2011-10-07):
# There is news in the media, however there is still no decree about it.
@@ -751,16 +752,16 @@
# From Rodrigo Severo (2012-10-16):
# Tocantins state will have DST.
-# http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
+# https://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
# From Steffen Thorsen (2013-09-20):
# Tocantins in Brazil is very likely not to observe DST from October....
# http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto
# We will keep this article updated when this is confirmed:
-# http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
+# https://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
# From Steffen Thorsen (2013-10-17):
-# http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html
+# https://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html
# Senator Jorge Viana announced that Acre will change time zone on November 10.
# He did not specify the time of the change, nor if western parts of Amazonas
# will change as well.
@@ -771,14 +772,14 @@
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01)
# Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10)
-Rule Brazil 1931 only - Oct 3 11:00 1:00 S
+Rule Brazil 1931 only - Oct 3 11:00 1:00 -
Rule Brazil 1932 1933 - Apr 1 0:00 0 -
-Rule Brazil 1932 only - Oct 3 0:00 1:00 S
+Rule Brazil 1932 only - Oct 3 0:00 1:00 -
# Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10)
# revoked DST.
# Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24)
# Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13)
-Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S
+Rule Brazil 1949 1952 - Dec 1 0:00 1:00 -
Rule Brazil 1950 only - Apr 16 1:00 0 -
Rule Brazil 1951 1952 - Apr 1 0:00 0 -
# Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24)
@@ -790,51 +791,51 @@
# in SP, RJ, GB, MG, ES, due to the prolongation of the drought.
# Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03)
# extended the above decree to all of the national territory on 12-09.
-Rule Brazil 1963 only - Dec 9 0:00 1:00 S
+Rule Brazil 1963 only - Dec 9 0:00 1:00 -
# Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25)
# extended summer time by one day to 1964-03-01 00:00 (start of school).
Rule Brazil 1964 only - Mar 1 0:00 0 -
# Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27)
-Rule Brazil 1965 only - Jan 31 0:00 1:00 S
+Rule Brazil 1965 only - Jan 31 0:00 1:00 -
Rule Brazil 1965 only - Mar 31 0:00 0 -
# Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22)
-Rule Brazil 1965 only - Dec 1 0:00 1:00 S
+Rule Brazil 1965 only - Dec 1 0:00 1:00 -
# Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18)
Rule Brazil 1966 1968 - Mar 1 0:00 0 -
-Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S
+Rule Brazil 1966 1967 - Nov 1 0:00 1:00 -
# Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15)
# revoked DST.
# Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27)
-Rule Brazil 1985 only - Nov 2 0:00 1:00 S
+Rule Brazil 1985 only - Nov 2 0:00 1:00 -
# Decree 92,310 (1986-01-21)
# Decree 92,463 (1986-03-13)
Rule Brazil 1986 only - Mar 15 0:00 0 -
# Decree 93,316 (1986-10-01)
-Rule Brazil 1986 only - Oct 25 0:00 1:00 S
+Rule Brazil 1986 only - Oct 25 0:00 1:00 -
Rule Brazil 1987 only - Feb 14 0:00 0 -
# Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22)
-Rule Brazil 1987 only - Oct 25 0:00 1:00 S
+Rule Brazil 1987 only - Oct 25 0:00 1:00 -
Rule Brazil 1988 only - Feb 7 0:00 0 -
# Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12)
# except for the states of AC, AM, PA, RR, RO, and AP (then a territory)
-Rule Brazil 1988 only - Oct 16 0:00 1:00 S
+Rule Brazil 1988 only - Oct 16 0:00 1:00 -
Rule Brazil 1989 only - Jan 29 0:00 0 -
# Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21)
# with the same exceptions
-Rule Brazil 1989 only - Oct 15 0:00 1:00 S
+Rule Brazil 1989 only - Oct 15 0:00 1:00 -
Rule Brazil 1990 only - Feb 11 0:00 0 -
# Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17)
# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF.
# Decree 99,629 (1990-10-19) adds BA, MT.
-Rule Brazil 1990 only - Oct 21 0:00 1:00 S
+Rule Brazil 1990 only - Oct 21 0:00 1:00 -
Rule Brazil 1991 only - Feb 17 0:00 0 -
# Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25)
# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF.
-Rule Brazil 1991 only - Oct 20 0:00 1:00 S
+Rule Brazil 1991 only - Oct 20 0:00 1:00 -
Rule Brazil 1992 only - Feb 9 0:00 0 -
# Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16)
# adopted by same states.
-Rule Brazil 1992 only - Oct 25 0:00 1:00 S
+Rule Brazil 1992 only - Oct 25 0:00 1:00 -
Rule Brazil 1993 only - Jan 31 0:00 0 -
# Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28)
# adopted by same states, plus AM.
@@ -844,12 +845,12 @@
# adopted by same states, plus MT and TO.
# Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13)
# adds AL, SE.
-Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S
+Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 -
Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 -
Rule Brazil 1996 only - Feb 11 0:00 0 -
# Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04)
# adopted by same states, minus AL, SE.
-Rule Brazil 1996 only - Oct 6 0:00 1:00 S
+Rule Brazil 1996 only - Oct 6 0:00 1:00 -
Rule Brazil 1997 only - Feb 16 0:00 0 -
# From Daniel C. Sobral (1998-02-12):
# In 1997, the DS began on October 6. The stated reason was that
@@ -859,19 +860,19 @@
# to help dealing with the shortages of electric power.
#
# Decree 2,317 (1997-09-04), adopted by same states.
-Rule Brazil 1997 only - Oct 6 0:00 1:00 S
+Rule Brazil 1997 only - Oct 6 0:00 1:00 -
# Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG>
# (1998-02-10)
Rule Brazil 1998 only - Mar 1 0:00 0 -
# Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11)
# adopted by the same states as before.
-Rule Brazil 1998 only - Oct 11 0:00 1:00 S
+Rule Brazil 1998 only - Oct 11 0:00 1:00 -
Rule Brazil 1999 only - Feb 21 0:00 0 -
# Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif>
# (1999-08-23) adopted by same states.
# Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30)
# adds SE, AL, PB, PE, RN, CE, PI, MA and RR.
-Rule Brazil 1999 only - Oct 3 0:00 1:00 S
+Rule Brazil 1999 only - Oct 3 0:00 1:00 -
Rule Brazil 2000 only - Feb 27 0:00 0 -
# Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06)
# adopted by the same states as before.
@@ -881,39 +882,60 @@
# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
# Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif>
# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.
-Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S
+Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 -
Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 -
# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE.
# 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm>
-Rule Brazil 2002 only - Nov 3 0:00 1:00 S
+Rule Brazil 2002 only - Nov 3 0:00 1:00 -
# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO.
# 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm>
-Rule Brazil 2003 only - Oct 19 0:00 1:00 S
+Rule Brazil 2003 only - Oct 19 0:00 1:00 -
# Decree 5,223 (2004-10-01) reestablishes DST in MT.
# 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm>
-Rule Brazil 2004 only - Nov 2 0:00 1:00 S
+Rule Brazil 2004 only - Nov 2 0:00 1:00 -
# Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19),
# adopted by the same states as before.
-Rule Brazil 2005 only - Oct 16 0:00 1:00 S
+Rule Brazil 2005 only - Oct 16 0:00 1:00 -
# Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03),
# adopted by the same states as before.
-Rule Brazil 2006 only - Nov 5 0:00 1:00 S
+Rule Brazil 2006 only - Nov 5 0:00 1:00 -
Rule Brazil 2007 only - Feb 25 0:00 0 -
# Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26),
# adopted by the same states as before.
-Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S
+Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 -
# From Frederico A. C. Neves (2008-09-10):
# According to this decree
# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm
# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the
# 3rd Feb Sunday. There is an exception on the return date when this is
# the Carnival Sunday then the return date will be the next Sunday...
-Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S
+Rule Brazil 2008 2017 - Oct Sun>=15 0:00 1:00 -
Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 -
+# Decree 7,584 <http://pcdsh01.on.br/HVdecreto7584_20111013.jpg> (2011-10-13)
+# added Bahia.
Rule Brazil 2012 only - Feb Sun>=22 0:00 0 -
+# Decree 7,826 <http://pcdsh01.on.br/HVdecreto7826_20121015.jpg> (2012-10-15)
+# removed Bahia and added Tocantins.
+# Decree 8,112 <http://pcdsh01.on.br/HVdecreto8112_20130930.JPG> (2013-09-30)
+# removed Tocantins.
Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 -
Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -
Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 -
+# From Steffen Thorsen (2017-12-18):
+# According to many media sources, next year's DST start in Brazil will move to
+# the first Sunday of November, and it will stay like that for the years after.
+# ... https://www.timeanddate.com/news/time/brazil-delays-dst-2018.html
+# From Steffen Thorsen (2017-12-20):
+# http://www.planalto.gov.br/ccivil_03/_ato2015-2018/2017/decreto/D9242.htm
+#
+# From Fábio Gomes (2018-10-04):
+# The Brazilian president just announced a new change on this year DST.
+# It was scheduled to start on November 4th and it was changed to November 18th.
+# From Rodrigo Brüning Wessler (2018-10-15):
+# The Brazilian government just announced that the change in DST was
+# canceled.... Maybe the president Michel Temer also woke up one hour
+# earlier today. :)
+Rule Brazil 2018 max - Nov Sun>=1 0:00 1:00 -
Rule Brazil 2023 only - Feb Sun>=22 0:00 0 -
Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 -
Rule Brazil 2026 only - Feb Sun>=22 0:00 0 -
@@ -1068,7 +1090,7 @@
# From Paul Eggert (2015-04-03):
# Shanks & Pottenger says America/Santiago introduced standard time in
-# 1890 and rounds its UTC offset to 70W40; guess that in practice this
+# 1890 and rounds its UT offset to 70W40; guess that in practice this
# was the same offset as in 1916-1919. It also says Pacific/Easter
# standardized on 109W22 in 1890; assume this didn't change the clocks.
#
@@ -1076,18 +1098,18 @@
# the following source, cited by Oscar van Vlijmen (2006-10-08):
# [1] Chile Law
# http://www.webexhibits.org/daylightsaving/chile.html
-# This contains a copy of a this official table:
+# This contains a copy of this official table:
# Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
-# http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
+# https://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
# [1] needs several corrections, though.
#
# The first set of corrections is from:
# [2] History of the Official Time of Chile
# http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See:
-# http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html
+# https://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html
# This is an English translation of:
# Historia de la hora oficial de Chile (retrieved 2012-10-24). See:
-# http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm
+# https://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm
# A fancier Spanish version (requiring mouse-clicking) is at:
# http://www.horaoficial.cl/historia_hora.html
# Conflicts between [1] and [2] were resolved as follows:
@@ -1219,29 +1241,47 @@
# they will switch from -03 to -04 one hour after Santiago does that day.
# For now, assume that they will not revert.
+# From Juan Correa (2018-08-13):
+# As of moments ago, the Ministry of Energy in Chile has announced the new
+# schema for DST. ... Announcement in video (in Spanish):
+# https://twitter.com/MinEnergia/status/1029000399129374720
+# From Yonathan Dossow (2018-08-13):
+# The video says "first Saturday of September", we all know it means Sunday at
+# midnight.
+# From Tim Parenti (2018-08-13):
+# Translating the captions on the video at 0:44-0:55, "We want to announce as
+# Government that from 2019, Winter Time will be increased to 5 months, between
+# the first Saturday of April and the first Saturday of September."
+# At 2:08-2:20, "The Magallanes region will maintain its current time, as
+# decided by the citizens during 2017, but our Government will promote a
+# regional dialogue table to gather their opinion on this matter."
+# https://twitter.com/MinEnergia/status/1029009354001973248
+# "We will keep the new time policy unchanged for at least the next 4 years."
+# So we extend the new rules on Saturdays at 24:00 mainland time indefinitely.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
+Rule Chile 1927 1931 - Sep 1 0:00 1:00 -
Rule Chile 1928 1932 - Apr 1 0:00 0 -
-Rule Chile 1968 only - Nov 3 4:00u 1:00 S
+Rule Chile 1968 only - Nov 3 4:00u 1:00 -
Rule Chile 1969 only - Mar 30 3:00u 0 -
-Rule Chile 1969 only - Nov 23 4:00u 1:00 S
+Rule Chile 1969 only - Nov 23 4:00u 1:00 -
Rule Chile 1970 only - Mar 29 3:00u 0 -
Rule Chile 1971 only - Mar 14 3:00u 0 -
-Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
+Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 -
Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
-Rule Chile 1973 only - Sep 30 4:00u 1:00 S
-Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
+Rule Chile 1973 only - Sep 30 4:00u 1:00 -
+Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 -
Rule Chile 1987 only - Apr 12 3:00u 0 -
Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 -
-Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S
-Rule Chile 1990 only - Sep 16 4:00u 1:00 S
+Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 -
+Rule Chile 1990 only - Sep 16 4:00u 1:00 -
Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
-Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
+Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 -
Rule Chile 1997 only - Mar 30 3:00u 0 -
Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
-Rule Chile 1998 only - Sep 27 4:00u 1:00 S
+Rule Chile 1998 only - Sep 27 4:00u 1:00 -
Rule Chile 1999 only - Apr 4 3:00u 0 -
-Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S
+Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 -
Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
# N.B.: the end of March 29 in Chile is March 30 in Universal time,
# which is used below in specifying the transition.
@@ -1249,11 +1289,13 @@
Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
Rule Chile 2011 only - May Sun>=2 3:00u 0 -
-Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
+Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 -
Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 -
-Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S
-Rule Chile 2016 max - May Sun>=9 3:00u 0 -
-Rule Chile 2016 max - Aug Sun>=9 4:00u 1:00 S
+Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 -
+Rule Chile 2016 2018 - May Sun>=9 3:00u 0 -
+Rule Chile 2016 2018 - Aug Sun>=9 4:00u 1:00 -
+Rule Chile 2019 max - Apr Sun>=2 3:00u 0 -
+Rule Chile 2019 max - Sep Sun>=2 4:00u 1:00 -
# IATA SSIM anomalies: (1992-02) says 1992-03-14;
# (1996-09) says 1998-03-08. Ignore these.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -1318,7 +1360,7 @@
# "A variation of fifteen minutes in the public clocks of Bogota is not rare."
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule CO 1992 only - May 3 0:00 1:00 S
+Rule CO 1992 only - May 3 0:00 1:00 -
Rule CO 1993 only - Apr 4 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
@@ -1363,10 +1405,10 @@
# Milne says the Central and South American Telegraph Company used -5:24:15.
#
# From Alois Treindl (2016-12-15):
-# http://www.elcomercio.com/actualidad/hora-sixto-1993.html
+# https://www.elcomercio.com/actualidad/hora-sixto-1993.html
# ... Whether the law applied also to Galápagos, I do not know.
# From Paul Eggert (2016-12-15):
-# http://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html
+# https://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html
# This says President Sixto Durán Ballén signed decree No. 285, which
# established DST from 1992-11-28 to 1993-02-05; it does not give transition
# times. The people called it "hora de Sixto" ("Sixto hour"). The change did
@@ -1378,7 +1420,7 @@
# repeated. For now, assume transitions were at 00:00 local time country-wide.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Ecuador 1992 only - Nov 28 0:00 1:00 S
+Rule Ecuador 1992 only - Nov 28 0:00 1:00 -
Rule Ecuador 1993 only - Feb 5 0:00 0 -
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -1468,22 +1510,22 @@
# the maintainers of the database to inform them we're adopting
# the same policy this year and suggest recommendations for future years.
#
-# For now we will assume permanent summer time for the Falklands
+# For now we will assume permanent -03 for the Falklands
# until advised differently (to apply for 2012 and beyond, after the 2011
# experiment was apparently successful.)
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S
+Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 -
Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 -
-Rule Falk 1939 only - Oct 1 0:00 1:00 S
-Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S
+Rule Falk 1939 only - Oct 1 0:00 1:00 -
+Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 -
Rule Falk 1943 only - Jan 1 0:00 0 -
-Rule Falk 1983 only - Sep lastSun 0:00 1:00 S
+Rule Falk 1983 only - Sep lastSun 0:00 1:00 -
Rule Falk 1984 1985 - Apr lastSun 0:00 0 -
-Rule Falk 1984 only - Sep 16 0:00 1:00 S
-Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S
+Rule Falk 1984 only - Sep 16 0:00 1:00 -
+Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 -
Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 -
Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 -
-Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S
+Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Stanley -3:51:24 - LMT 1890
-3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
@@ -1518,16 +1560,16 @@
# adjust their clocks at 0 hour of the given dates.
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Para 1975 1988 - Oct 1 0:00 1:00 S
+Rule Para 1975 1988 - Oct 1 0:00 1:00 -
Rule Para 1975 1978 - Mar 1 0:00 0 -
Rule Para 1979 1991 - Apr 1 0:00 0 -
-Rule Para 1989 only - Oct 22 0:00 1:00 S
-Rule Para 1990 only - Oct 1 0:00 1:00 S
-Rule Para 1991 only - Oct 6 0:00 1:00 S
+Rule Para 1989 only - Oct 22 0:00 1:00 -
+Rule Para 1990 only - Oct 1 0:00 1:00 -
+Rule Para 1991 only - Oct 6 0:00 1:00 -
Rule Para 1992 only - Mar 1 0:00 0 -
-Rule Para 1992 only - Oct 5 0:00 1:00 S
+Rule Para 1992 only - Oct 5 0:00 1:00 -
Rule Para 1993 only - Mar 31 0:00 0 -
-Rule Para 1993 1995 - Oct 1 0:00 1:00 S
+Rule Para 1993 1995 - Oct 1 0:00 1:00 -
Rule Para 1994 1995 - Feb lastSun 0:00 0 -
Rule Para 1996 only - Mar 1 0:00 0 -
# IATA SSIM (2000-02) says 1999-10-10; ignore this for now.
@@ -1545,7 +1587,7 @@
# year, the time will change on the first Sunday of October; likewise, the
# clock will be set back on the first Sunday of March.
#
-Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S
+Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 -
# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.
Rule Para 1997 only - Feb lastSun 0:00 0 -
# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but
@@ -1556,7 +1598,7 @@
# dst method to be from the first Sunday in September to the first Sunday in
# April.
Rule Para 2002 2004 - Apr Sun>=1 0:00 0 -
-Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S
+Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 -
#
# From Jesper Nørgaard Welen (2005-01-02):
# There are several sources that claim that Paraguay made
@@ -1565,7 +1607,7 @@
# Decree 1,867 (2004-03-05)
# From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13)
# http://www.presidencia.gov.py/decretos/D1867.pdf
-Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S
+Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 -
Rule Para 2005 2009 - Mar Sun>=8 0:00 0 -
# From Carlos Raúl Perasso (2010-02-18):
# By decree number 3958 issued yesterday
@@ -1578,7 +1620,7 @@
# and that on the first Sunday of the month of October, it is to be set
# forward 60 minutes, in all the territory of the Paraguayan Republic.
# ...
-Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S
+Rule Para 2010 max - Oct Sun>=1 0:00 1:00 -
Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -
#
# From Steffen Thorsen (2013-03-07):
@@ -1611,16 +1653,16 @@
# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Peru 1938 only - Jan 1 0:00 1:00 S
+Rule Peru 1938 only - Jan 1 0:00 1:00 -
Rule Peru 1938 only - Apr 1 0:00 0 -
-Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S
+Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 -
Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
-Rule Peru 1986 1987 - Jan 1 0:00 1:00 S
+Rule Peru 1986 1987 - Jan 1 0:00 1:00 -
Rule Peru 1986 1987 - Apr 1 0:00 0 -
-Rule Peru 1990 only - Jan 1 0:00 1:00 S
+Rule Peru 1990 only - Jan 1 0:00 1:00 -
Rule Peru 1990 only - Apr 1 0:00 0 -
# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
-Rule Peru 1994 only - Jan 1 0:00 1:00 S
+Rule Peru 1994 only - Jan 1 0:00 1:00 -
Rule Peru 1994 only - Apr 1 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Lima -5:08:12 - LMT 1890
@@ -1666,72 +1708,201 @@
# Uruguay
# From Paul Eggert (1993-11-18):
# Uruguay wins the prize for the strangest peacetime manipulation of the rules.
-# From Shanks & Pottenger:
+#
+# From Tim Parenti (2018-02-20), per Jeremie Bonjour (2018-01-31) and Michael
+# Deckers (2018-02-20):
+# ... At least they kept good records...
+#
+# http://www.armada.mil.uy/ContenidosPDFs/sohma/web/almanaque/almanaque_2018.pdf#page=36
+# Page 36 of Almanaque 2018, published by the Oceanography, Hydrography, and
+# Meteorology Service of the Uruguayan Navy, seems to give many transitions
+# with greater clarity than we've had before. It directly references many laws
+# and decrees which are, in turn, referenced below. They can be viewed in the
+# public archives of the Diario Oficial (in Spanish) at
+# http://www.impo.com.uy/diariooficial/
+#
+# Ley No. 3920 of 1908-06-10 placed the determination of legal time under the
+# auspices of the National Institute for the Prediction of Time. It is unclear
+# exactly what offset was used during this period, though Ley No. 7200 of
+# 1920-04-23 used the Observatory of the National Meteorological Institute in
+# Montevideo (34° 54' 33" S, 56° 12' 45" W) as its reference meridian,
+# retarding legal time by 15 minutes 9 seconds from 1920-04-30 24:00,
+# resulting in UT-04. Assume the corresponding LMT of UT-03:44:51 (given on
+# page 725 of the Proceedings of the Second Pan-American Scientific Congress,
+# 1915-1916) was in use, and merely became official from 1908-06-10.
+# https://www.impo.com.uy/diariooficial/1908/06/18/12
+# https://www.impo.com.uy/diariooficial/1920/04/27/9
+#
+# Ley No. 7594 of 1923-06-28 specified legal time as Observatory time advanced
+# by 44 minutes 51 seconds (UT-03) "from 30 September to 31 March", and by 14
+# minutes 51 seconds (UT-03:30) "the rest of the year"; a message from the
+# National Council of Administration the same day, published directly below the
+# law in the Diario Oficial, specified the first transition to be 1923-09-30
+# 24:00. This effectively established standard time at UT-03:30 with 30
+# minutes DST. Assume transitions at 24:00 on the specified days until Ley No.
+# 7919 of 1926-03-05 ended this arrangement, repealing all "laws and other
+# provisions which oppose" it, resulting in year-round UT-03:30; a Resolución
+# of 1926-03-11 puts the final transition at 1926-03-31 24:00, the same as it
+# would have been under the previous law.
+# https://www.impo.com.uy/diariooficial/1923/07/02/2
+# https://www.impo.com.uy/diariooficial/1926/03/10/2
+# https://www.impo.com.uy/diariooficial/1926/03/18/2
+#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-# Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
-Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS
+Rule Uruguay 1923 1925 - Oct 1 0:00 0:30 -
Rule Uruguay 1924 1926 - Apr 1 0:00 0 -
-Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS
-Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS
-# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman.
-Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 -
-Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS
-Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 -
-# Whitman gives 1937 Oct 3; go with Shanks & Pottenger.
-Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS
-# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,
-# and 1943 Apr 13 "to present time"; go with Shanks & Pottenger.
-Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS
-Rule Uruguay 1942 only - Jan 1 0:00 0 -
-Rule Uruguay 1942 only - Dec 14 0:00 1:00 S
+# From Tim Parenti (2018-02-15):
+# http://www.impo.com.uy/diariooficial/1933/10/27/6
+#
+# It appears Ley No. 9122 of 1933 was never published as such in the Diario
+# Oficial, but instead appeared as Document 26 in the Diario on Friday
+# 1933-10-27 as a decree made Monday 1933-10-23 and filed under the Ministry of
+# National Defense. It reinstituted a DST of 30 minutes (to UT-03) "from the
+# last Sunday of October...until the last Saturday of March." In accordance
+# with this provision, the first transition was explicitly specified in Article
+# 2 of the decree as Saturday 1933-10-28 at 24:00; that is, Sunday 1933-10-29
+# at 00:00. Assume transitions at 00:00 Sunday throughout.
+#
+# Departing from the matter-of-fact nature of previous timekeeping laws, the
+# 1933 decree "consider[s] the advantages of...the advance of legal time":
+#
+# "Whereas: The measure adopted by almost all nations at the time of the last
+# World War still persists in North America and Europe, precisely because of
+# the economic, hygienic, and social advantages derived from such an
+# emergency measure...
+#
+# Whereas: The advance of the legal time during the summer seasons, by
+# displacing social activity near sunrise, favors the citizen populations
+# and especially the society that creates and works..."
+#
+# It further specified that "necessary measures" be taken to ensure that
+# "public spectacles finish, in general, before [01:00]."
+Rule Uruguay 1933 1938 - Oct lastSun 0:00 0:30 -
+Rule Uruguay 1934 1941 - Mar lastSat 24:00 0 -
+# From Tim Parenti (2018-02-15):
+# Most of the Rules below, and their contemporaneous Zone lines, have been
+# updated simply to match the Almanaque 2018. Although the document does not
+# list exact transition times, midnight transitions were already present in our
+# data here for all transitions through 2004-09, and this is both consistent
+# with prior transitions and verified in several decrees marked below between
+# 1939-09 and 2004-09, wherein the relevant text was typically of the form:
+#
+# "From 0 hours on [date], the legal time of the entire Republic will be...
+#
+# In accordance with [the preceding], on [previous date] at 24 hours, all
+# clocks throughout the Republic will be [advanced/retarded] by..."
+#
+# It is possible that there is greater specificity to be found for the Rules
+# below, but it is buried in no fewer than 40 different decrees individually
+# referenced by the Almanaque for the period from 1939-09 to 2014-09.
+# Four-fifths of these were promulgated less than two weeks before taking
+# effect; more than half within a week and none more than 5 weeks. Only the
+# handful with comments below have been checked with any thoroughness.
+Rule Uruguay 1939 only - Oct 1 0:00 0:30 -
+Rule Uruguay 1940 only - Oct 27 0:00 0:30 -
+# From Tim Parenti (2018-02-15):
+# Decreto 1145 of the Ministry of National Defense, dated 1941-07-26, specified
+# UT-03 from Friday 1941-08-01 00:00, citing an "urgent...need to save fuel".
+# http://www.impo.com.uy/diariooficial/1941/08/04/1
+Rule Uruguay 1941 only - Aug 1 0:00 0:30 -
+# From Tim Parenti (2018-02-15):
+# Decreto 1866 of the Ministry of National Defense, dated 1942-12-09, specified
+# further advancement (to UT-02:30) from Sunday 1942-12-13 24:00. Since clocks
+# never went back to UT-03:30 thereafter, this is modeled as advancing standard
+# time by 30 minutes to UT-03, while retaining 30 minutes of DST.
+# http://www.impo.com.uy/diariooficial/1942/12/16/3
+Rule Uruguay 1942 only - Dec 14 0:00 0:30 -
Rule Uruguay 1943 only - Mar 14 0:00 0 -
-Rule Uruguay 1959 only - May 24 0:00 1:00 S
+Rule Uruguay 1959 only - May 24 0:00 0:30 -
Rule Uruguay 1959 only - Nov 15 0:00 0 -
-Rule Uruguay 1960 only - Jan 17 0:00 1:00 S
+Rule Uruguay 1960 only - Jan 17 0:00 1:00 -
Rule Uruguay 1960 only - Mar 6 0:00 0 -
-Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S
+Rule Uruguay 1965 only - Apr 4 0:00 1:00 -
Rule Uruguay 1965 only - Sep 26 0:00 0 -
-Rule Uruguay 1966 1967 - Oct 31 0:00 0 -
-Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS
-Rule Uruguay 1968 1970 - Dec 2 0:00 0 -
-Rule Uruguay 1972 only - Apr 24 0:00 1:00 S
-Rule Uruguay 1972 only - Aug 15 0:00 0 -
-Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS
-Rule Uruguay 1974 only - Dec 22 0:00 1:00 S
-Rule Uruguay 1976 only - Oct 1 0:00 0 -
-Rule Uruguay 1977 only - Dec 4 0:00 1:00 S
-Rule Uruguay 1978 only - Apr 1 0:00 0 -
-Rule Uruguay 1979 only - Oct 1 0:00 1:00 S
-Rule Uruguay 1980 only - May 1 0:00 0 -
-Rule Uruguay 1987 only - Dec 14 0:00 1:00 S
-Rule Uruguay 1988 only - Mar 14 0:00 0 -
-Rule Uruguay 1988 only - Dec 11 0:00 1:00 S
-Rule Uruguay 1989 only - Mar 12 0:00 0 -
-Rule Uruguay 1989 only - Oct 29 0:00 1:00 S
-# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2,
-# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA.
-Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 -
-Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S
-Rule Uruguay 1992 only - Oct 18 0:00 1:00 S
+# From Tim Parenti (2018-02-15):
+# Decreto 321/968 of 1968-05-25, citing emergency drought measures decreed the
+# day before, brought clocks forward 30 minutes from Monday 1968-05-27 00:00.
+# http://www.impo.com.uy/diariooficial/1968/05/30/5
+Rule Uruguay 1968 only - May 27 0:00 0:30 -
+Rule Uruguay 1968 only - Dec 1 0:00 0 -
+# From Tim Parenti (2018-02-15):
+# Decreto 188/970 of 1970-04-23 instituted restrictions on electricity
+# consumption "as a consequence of the current rainfall regime in the country".
+# Articles 13 and 14 advanced clocks by an hour from Saturday 1970-04-25 00:00.
+# http://www.impo.com.uy/diariooficial/1970/04/29/4
+Rule Uruguay 1970 only - Apr 25 0:00 1:00 -
+Rule Uruguay 1970 only - Jun 14 0:00 0 -
+Rule Uruguay 1972 only - Apr 23 0:00 1:00 -
+Rule Uruguay 1972 only - Jul 16 0:00 0 -
+# From Tim Parenti (2018-02-15):
+# Decreto 29/974 of 1974-01-11, citing "the international rise in the price of
+# oil", advanced clocks by 90 minutes (to UT-01:30). Decreto 163/974 of
+# 1974-03-04 returned 60 of those minutes (to UT-02:30), and the remaining 30
+# minutes followed in Decreto 679/974 of 1974-08-29.
+# http://www.impo.com.uy/diariooficial/1974/01/22/11
+# http://www.impo.com.uy/diariooficial/1974/03/14/3
+# http://www.impo.com.uy/diariooficial/1974/09/04/6
+Rule Uruguay 1974 only - Jan 13 0:00 1:30 -
+Rule Uruguay 1974 only - Mar 10 0:00 0:30 -
+Rule Uruguay 1974 only - Sep 1 0:00 0 -
+Rule Uruguay 1974 only - Dec 22 0:00 1:00 -
+Rule Uruguay 1975 only - Mar 30 0:00 0 -
+Rule Uruguay 1976 only - Dec 19 0:00 1:00 -
+Rule Uruguay 1977 only - Mar 6 0:00 0 -
+Rule Uruguay 1977 only - Dec 4 0:00 1:00 -
+Rule Uruguay 1978 1979 - Mar Sun>=1 0:00 0 -
+Rule Uruguay 1978 only - Dec 17 0:00 1:00 -
+Rule Uruguay 1979 only - Apr 29 0:00 1:00 -
+Rule Uruguay 1980 only - Mar 16 0:00 0 -
+# From Tim Parenti (2018-02-15):
+# Decreto 725/987 of 1987-12-04 cited "better use of national tourist
+# attractions" to advance clocks one hour from Monday 1987-12-14 00:00.
+# http://www.impo.com.uy/diariooficial/1988/01/25/1
+Rule Uruguay 1987 only - Dec 14 0:00 1:00 -
+Rule Uruguay 1988 only - Feb 28 0:00 0 -
+Rule Uruguay 1988 only - Dec 11 0:00 1:00 -
+Rule Uruguay 1989 only - Mar 5 0:00 0 -
+Rule Uruguay 1989 only - Oct 29 0:00 1:00 -
+Rule Uruguay 1990 only - Feb 25 0:00 0 -
+# From Tim Parenti (2018-02-15), per Paul Eggert (1999-11-04):
+# IATA agrees as below for 1990-10 through 1993-02. Per Almanaque 2018, the
+# 1992/1993 season appears to be the first in over half a century where DST
+# both began and ended pursuant to the same decree.
+Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 -
+Rule Uruguay 1991 1992 - Mar Sun>=1 0:00 0 -
+Rule Uruguay 1992 only - Oct 18 0:00 1:00 -
Rule Uruguay 1993 only - Feb 28 0:00 0 -
# From Eduardo Cota (2004-09-20):
# The Uruguayan government has decreed a change in the local time....
-# http://www.presidencia.gub.uy/decretos/2004091502.htm
-Rule Uruguay 2004 only - Sep 19 0:00 1:00 S
+# From Tim Parenti (2018-02-15):
+# Decreto 328/004 of 2004-09-15.
+# http://www.impo.com.uy/diariooficial/2004/09/23/documentos.pdf#page=1
+Rule Uruguay 2004 only - Sep 19 0:00 1:00 -
# From Steffen Thorsen (2005-03-11):
# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to
# save energy ... it was postponed two weeks....
-# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm
+# From Tim Parenti (2018-02-15):
+# This 2005 postponement is not in Almanaque 2018. Go with the contemporaneous
+# reporting, which is confirmed by Decreto 107/005 of 2005-03-10 amending
+# Decreto 328/004:
+# http://www.impo.com.uy/diariooficial/2005/03/15/documentos.pdf#page=1
+# The original decree specified a transition of 2005-03-12 24:00, but the new
+# one specified 2005-03-27 02:00.
Rule Uruguay 2005 only - Mar 27 2:00 0 -
# From Eduardo Cota (2005-09-27):
-# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
-# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
-# 02:00 local time, official time in Uruguay will be at GMT -2.
-Rule Uruguay 2005 only - Oct 9 2:00 1:00 S
-Rule Uruguay 2006 only - Mar 12 2:00 0 -
-# From Jesper Nørgaard Welen (2006-09-06):
-# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
-#
+# ...from 2005-10-09 at 02:00 local time, until 2006-03-12 at 02:00 local time,
+# official time in Uruguay will be at GMT -2.
+# From Tim Parenti (2018-02-15):
+# Decreto 318/005 of 2005-09-19.
+# http://www.impo.com.uy/diariooficial/2005/09/23/documentos.pdf#page=1
+Rule Uruguay 2005 only - Oct 9 2:00 1:00 -
+Rule Uruguay 2006 2015 - Mar Sun>=8 2:00 0 -
+# From Tim Parenti (2018-02-15), per Jesper Nørgaard Welen (2006-09-06):
+# Decreto 311/006 of 2006-09-04 established regular DST from the first Sunday
+# of October at 02:00 through the second Sunday of March at 02:00. Almanaque
+# 2018 appears to have a few typoed dates through this period; ignore them.
+# http://www.impo.com.uy/diariooficial/2006/09/08/documentos.pdf#page=1
+Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 -
# From Steffen Thorsen (2015-06-30):
# ... it looks like they will not be using DST the coming summer:
# http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787
@@ -1741,17 +1912,19 @@
# instead of out to dinner.
# From Pablo Camargo (2015-07-13):
# http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf
-# [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
-Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S
-Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 -
+# From Tim Parenti (2018-02-15):
+# Decreto 178/015 of 2015-06-29; repeals Decreto 311/006.
# This Zone can be simplified once we assume zic %z.
-Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
- -3:44:44 - MMT 1920 May 1 # Montevideo MT
+Zone America/Montevideo -3:44:51 - LMT 1908 Jun 10
+ -3:44:51 - MMT 1920 May 1 # Montevideo MT
+ -4:00 - -04 1923 Oct 1
-3:30 Uruguay -0330/-03 1942 Dec 14
+ -3:00 Uruguay -03/-0230 1960
-3:00 Uruguay -03/-02 1968
- -3:00 Uruguay -03/-0230 1971
+ -3:00 Uruguay -03/-0230 1970
-3:00 Uruguay -03/-02 1974
+ -3:00 Uruguay -03/-0130 1974 Mar 10
-3:00 Uruguay -03/-0230 1974 Dec 22
-3:00 Uruguay -03/-02
@@ -1778,7 +1951,7 @@
# hours of presidential broadcasts, hours of lines,' quipped comedian
# Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps
# half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400
-# http://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE
+# https://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE
#
# From Matt Johnson (2016-04-20):
# ... published in the official Gazette [2016-04-18], here:
diff --git a/tools/java/org/unicode/cldr/util/data/systemv b/tools/java/org/unicode/cldr/util/data/systemv
index d9e2995..24c8f64 100644
--- a/tools/java/org/unicode/cldr/util/data/systemv
+++ b/tools/java/org/unicode/cldr/util/data/systemv
@@ -1,3 +1,5 @@
+# tzdb data for System V rules (this file is obsolete)
+
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
diff --git a/tools/java/org/unicode/cldr/util/data/zone.tab b/tools/java/org/unicode/cldr/util/data/zone.tab
index 204048c..27e1dee 100644
--- a/tools/java/org/unicode/cldr/util/data/zone.tab
+++ b/tools/java/org/unicode/cldr/util/data/zone.tab
@@ -1,9 +1,9 @@
-# tz zone descriptions (deprecated version)
+# tzdb timezone descriptions (deprecated version)
#
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
#
-# From Paul Eggert (2014-07-31):
+# From Paul Eggert (2018-06-27):
# This file is intended as a backward-compatibility aid for older programs.
# New programs should use zone1970.tab. This file is like zone1970.tab (see
# zone1970.tab's comments), but with the following additional restrictions:
@@ -12,13 +12,13 @@
# 2. The first data column contains exactly one country code.
#
# Because of (2), each row stands for an area that is the intersection
-# of a region identified by a country code and of a zone where civil
+# of a region identified by a country code and of a timezone where civil
# clocks have agreed since 1970; this is a narrower definition than
# that of zone1970.tab.
#
-# This table is intended as an aid for users, to help them select time
-# zone data entries appropriate for their practical needs. It is not
-# intended to take or endorse any position on legal or territorial claims.
+# This table is intended as an aid for users, to help them select timezones
+# appropriate for their practical needs. It is not intended to take or
+# endorse any position on legal or territorial claims.
#
#country-
#code coordinates TZ comments
@@ -186,7 +186,7 @@
GD +1203-06145 America/Grenada
GE +4143+04449 Asia/Tbilisi
GF +0456-05220 America/Cayenne
-GG +4927-00232 Europe/Guernsey
+GG +492717-0023210 Europe/Guernsey
GH +0533-00013 Africa/Accra
GI +3608-00521 Europe/Gibraltar
GL +6411-05144 America/Godthab Greenland (most areas)
@@ -221,7 +221,7 @@
IR +3540+05126 Asia/Tehran
IS +6409-02151 Atlantic/Reykjavik
IT +4154+01229 Europe/Rome
-JE +4912-00207 Europe/Jersey
+JE +491101-0020624 Europe/Jersey
JM +175805-0764736 America/Jamaica
JO +3157+03556 Asia/Amman
JP +353916+1394441 Asia/Tokyo
@@ -239,6 +239,7 @@
KY +1918-08123 America/Cayman
KZ +4315+07657 Asia/Almaty Kazakhstan (most areas)
KZ +4448+06528 Asia/Qyzylorda Qyzylorda/Kyzylorda/Kzyl-Orda
+KZ +5312+06337 Asia/Qostanay Qostanay/Kostanay/Kustanay
KZ +5017+05710 Asia/Aqtobe Aqtobe/Aktobe
KZ +4431+05016 Asia/Aqtau Mangghystau/Mankistau
KZ +4707+05156 Asia/Atyrau Atyrau/Atirau/Gur'yev
@@ -268,7 +269,7 @@
MN +4755+10653 Asia/Ulaanbaatar Mongolia (most areas)
MN +4801+09139 Asia/Hovd Bayan-Olgiy, Govi-Altai, Hovd, Uvs, Zavkhan
MN +4804+11430 Asia/Choibalsan Dornod, Sukhbaatar
-MO +2214+11335 Asia/Macau
+MO +221150+1133230 Asia/Macau
MP +1512+14545 Pacific/Saipan
MQ +1436-06105 America/Martinique
MR +1806-01557 Africa/Nouakchott
@@ -332,9 +333,9 @@
RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad
RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area
RU +4457+03406 Europe/Simferopol MSK+00 - Crimea
-RU +4844+04425 Europe/Volgograd MSK+00 - Volgograd
RU +5836+04939 Europe/Kirov MSK+00 - Kirov
RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan
+RU +4844+04425 Europe/Volgograd MSK+01 - Volgograd
RU +5134+04602 Europe/Saratov MSK+01 - Saratov
RU +5420+04824 Europe/Ulyanovsk MSK+01 - Ulyanovsk
RU +5312+05009 Europe/Samara MSK+01 - Samara, Udmurtia
@@ -372,7 +373,7 @@
SN +1440-01726 Africa/Dakar
SO +0204+04522 Africa/Mogadishu
SR +0550-05510 America/Paramaribo
-SS +0451+03136 Africa/Juba
+SS +0451+03137 Africa/Juba
ST +0020+00644 Africa/Sao_Tome
SV +1342-08912 America/El_Salvador
SX +180305-0630250 America/Lower_Princes
@@ -429,7 +430,7 @@
US +643004-1652423 America/Nome Alaska (west)
US +515248-1763929 America/Adak Aleutian Islands
US +211825-1575130 Pacific/Honolulu Hawaii
-UY -3453-05611 America/Montevideo
+UY -345433-0561245 America/Montevideo
UZ +3940+06648 Asia/Samarkand Uzbekistan (west)
UZ +4120+06918 Asia/Tashkent Uzbekistan (east)
VA +415408+0122711 Europe/Vatican
