diff --git a/icu4c/source/test/cintltst/ccaltst.c b/icu4c/source/test/cintltst/ccaltst.c
index c71c4da..bfdfa10 100644
--- a/icu4c/source/test/cintltst/ccaltst.c
+++ b/icu4c/source/test/cintltst/ccaltst.c
@@ -85,15 +85,15 @@
     { "en_US",                   UCAL_GREGORIAN, "gregorian" },
     { "ja_JP@calendar=japanese", UCAL_DEFAULT,   "japanese"  },
     { "th_TH",                   UCAL_GREGORIAN, "gregorian" },
-    { "th_TH",                   UCAL_DEFAULT,   "buddhist"  },
+    { "th_TH",                   UCAL_DEFAULT,   "gregorian"  },  // android-changed
     { "th-TH-u-ca-gregory",      UCAL_DEFAULT,   "gregorian" },
     { "ja_JP@calendar=japanese", UCAL_GREGORIAN, "gregorian" },
     { "fr_CH",                   UCAL_DEFAULT,   "gregorian" },
-    { "fr_SA",                   UCAL_DEFAULT,   "islamic-umalqura" },
-    { "fr_CH@rg=sazzzz",         UCAL_DEFAULT,   "islamic-umalqura" },
+    { "fr_SA",                   UCAL_DEFAULT,   "gregorian" },  // android-changed
+    { "fr_CH@rg=sazzzz",         UCAL_DEFAULT,   "gregorian" },  // android-changed
     { "fr_CH@calendar=japanese;rg=sazzzz", UCAL_DEFAULT, "japanese" },
-    { "fr_TH@rg=SA",             UCAL_DEFAULT,   "buddhist"  }, /* ignore malformed rg tag */
-    { "th@rg=SA",                UCAL_DEFAULT,   "buddhist"  }, /* ignore malformed rg tag */
+    { "fr_TH@rg=SA",             UCAL_DEFAULT,   "gregorian"  }, /* ignore malformed rg tag */  // android-changed
+    { "th@rg=SA",                UCAL_DEFAULT,   "gregorian"  }, /* ignore malformed rg tag */  // android-changed
     { "",                        UCAL_GREGORIAN, "gregorian" },
     { NULL,                      UCAL_GREGORIAN, "gregorian" },
     { NULL, 0, NULL } /* terminator */
@@ -1562,18 +1562,18 @@
             { "und",         "gregorian", NULL, NULL, NULL, NULL },
             { "en_US",       "gregorian", NULL, NULL, NULL, NULL },
             { "en_029",      "gregorian", NULL, NULL, NULL, NULL },
-            { "th_TH",       "buddhist", "gregorian", NULL, NULL, NULL },
-            { "und_TH",      "buddhist", "gregorian", NULL, NULL, NULL },
-            { "en_TH",       "buddhist", "gregorian", NULL, NULL, NULL },
+            { "th_TH",       "gregorian", "buddhist", NULL, NULL, NULL },  // android-changed
+            { "und_TH",      "gregorian", "buddhist", NULL, NULL, NULL },  // android-changed
+            { "en_TH",       "gregorian", "buddhist", NULL, NULL, NULL },  // android-changed
             { "he_IL",       "gregorian", "hebrew", "islamic", "islamic-civil", "islamic-tbla" },
             { "ar_EG",       "gregorian", "coptic", "islamic", "islamic-civil", "islamic-tbla" },
             { "ja",          "gregorian", "japanese", NULL, NULL, NULL },
             { "ps_Guru_IN",  "gregorian", "indian", NULL, NULL, NULL },
-            { "th@calendar=gregorian", "buddhist", "gregorian", NULL, NULL, NULL },
+            { "th@calendar=gregorian", "gregorian", "buddhist", NULL, NULL, NULL },  // android-changed
             { "en@calendar=islamic",   "gregorian", NULL, NULL, NULL, NULL },
             { "zh_TW",       "gregorian", "roc", "chinese", NULL, NULL },
-            { "ar_IR",       "persian", "gregorian", "islamic", "islamic-civil", "islamic-tbla" },
-            { "th@rg=SAZZZZ", "islamic-umalqura", "gregorian", "islamic", "islamic-rgsa", NULL },
+            { "ar_IR",       "gregorian", "persian", "islamic", "islamic-civil", "islamic-tbla" },  // android-changed
+            { "th@rg=SAZZZZ", "gregorian", "islamic-umalqura", "islamic", "islamic-rgsa", NULL },  // android-changed
     };
     const int32_t EXPECTED_SIZE[PREFERRED_SIZE] = { 1, 1, 1, 1, 2, 2, 2, 5, 5, 2, 2, 2, 1, 3, 5, 4 };
     UErrorCode status = U_ZERO_ERROR;
diff --git a/icu4c/source/test/intltest/dtfmttst.cpp b/icu4c/source/test/intltest/dtfmttst.cpp
index b272320..2a5968d 100644
--- a/icu4c/source/test/intltest/dtfmttst.cpp
+++ b/icu4c/source/test/intltest/dtfmttst.cpp
@@ -4867,12 +4867,12 @@
         return;
     }
 
-    // Farsi should default to the persian calendar, not gregorian
+    // Android: All locales default to Gregorian calendar:
     int32_t count;
     const UnicodeString *months = sym->getShortMonths(count);
 
     // First persian month.
-    UnicodeString expected("\\u0641\\u0631\\u0648\\u0631\\u062f\\u06cc\\u0646");
+    UnicodeString expected("\\u0698\\u0627\\u0646\\u0648\\u06CC\\u0647\\u0654");  // Android-changed
     assertEquals("", expected.unescape(), months[0]);
 }
 
diff --git a/icu4c/source/test/intltest/dtifmtts.cpp b/icu4c/source/test/intltest/dtifmtts.cpp
index f578b22..08179cf 100644
--- a/icu4c/source/test/intltest/dtifmtts.cpp
+++ b/icu4c/source/test/intltest/dtifmtts.cpp
@@ -998,48 +998,50 @@
 
         // Thai (default calendar buddhist)
 
-        "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E1E\\u0E38\\u0E18\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2550 \\u2013 \\u0E27\\u0E31\\u0E19\\u0E28\\u0E38\\u0E01\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2551",
+        // BEGIN ANDROID-changed.  Default calendar in Android is Gregorian for th locale.
+        // "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E1E\\u0E38\\u0E18\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2550 \\u2013 \\u0E27\\u0E31\\u0E19\\u0E28\\u0E38\\u0E01\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2551",
 
 
-        "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "dMMM", "10 \\u0E15.\\u0E04. 2550 \\u2013 10 \\u0E15.\\u0E04. 2551",
+        // "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "dMMM", "10 \\u0E15.\\u0E04. 2550 \\u2013 10 \\u0E15.\\u0E04. 2551",
 
-        "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "MMMy", "\\u0E15.\\u0E04. 2550 \\u2013 \\u0E15.\\u0E04. 2551",
+        // "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "MMMy", "\\u0E15.\\u0E04. 2550 \\u2013 \\u0E15.\\u0E04. 2551",
 
 
-        "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EdMy", "\\u0E1E. 10/10/2550 \\u2013 \\u0E28. 10/10/2551",
+        // "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EdMy", "\\u0E1E. 10/10/2550 \\u2013 \\u0E28. 10/10/2551",
 
-        "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "dMy", "10/10/2550 \\u2013 10/10/2551",
+        // "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "dMy", "10/10/2550 \\u2013 10/10/2551",
 
 
-        "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "My", "10/2550 \\u2013 10/2551",
+        // "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "My", "10/2550 \\u2013 10/2551",
 
-        "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EdM", "\\u0E1E. 10/10/2550 \\u2013 \\u0E28. 10/10/2551",
+        // "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EdM", "\\u0E1E. 10/10/2550 \\u2013 \\u0E28. 10/10/2551",
 
 
-        "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "y", "2550\\u20132551",
+        // "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "y", "2550\\u20132551",
 
-        "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "M", "10/2550 \\u2013 10/2551",
+        // "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "M", "10/2550 \\u2013 10/2551",
 
 
-        "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E1E\\u0E38\\u0E18\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. \\u2013 \\u0E27\\u0E31\\u0E19\\u0E40\\u0E2A\\u0E32\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E1E.\\u0E22. 2550",
+        // "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E1E\\u0E38\\u0E18\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. \\u2013 \\u0E27\\u0E31\\u0E19\\u0E40\\u0E2A\\u0E32\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E1E.\\u0E22. 2550",
 
 
-        "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "dMMM", "10 \\u0E15.\\u0E04. \\u2013 10 \\u0E1E.\\u0E22.",
+        // "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "dMMM", "10 \\u0E15.\\u0E04. \\u2013 10 \\u0E1E.\\u0E22.",
 
-        "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "MMMy", "\\u0E15.\\u0E04.\\u2013\\u0E1E.\\u0E22. 2550",
+        // "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "MMMy", "\\u0E15.\\u0E04.\\u2013\\u0E1E.\\u0E22. 2550",
 
-       "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "dM", "10/10 \\u2013 10/11",
+       // "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "dM", "10/10 \\u2013 10/11",
 
-        "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "My", "10/2550 \\u2013 11/2550",
+        // "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "My", "10/2550 \\u2013 11/2550",
 
 
-        "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "d", "10/10 \\u2013 10/11",
+        // "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "d", "10/10 \\u2013 10/11",
 
-        "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "y", "\\u0E1E.\\u0E28. 2550",
+        // "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "y", "\\u0E1E.\\u0E28. 2550",
 
 
-        "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "MMM", "\\u0E15.\\u0E04.\\u2013\\u0E1E.\\u0E22.",
+        // "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "MMM", "\\u0E15.\\u0E04.\\u2013\\u0E1E.\\u0E22.",
 
+        // END ANDROID-changed
     };
     expect(DATA, UPRV_LENGTHOF(DATA));
 }
diff --git a/icu4c/source/test/intltest/incaltst.cpp b/icu4c/source/test/intltest/incaltst.cpp
index 1e79576..1409d51 100644
--- a/icu4c/source/test/intltest/incaltst.cpp
+++ b/icu4c/source/test/intltest/incaltst.cpp
@@ -118,9 +118,9 @@
                             "buddhist",           
                             "gregorian",
                             "gregorian",
-                            "buddhist",           
-                            "buddhist",           
-                            "buddhist",           
+                            "gregorian",  // android-changed.  "buddhist",
+                            "gregorian",  // android-changed.  "buddhist",
+                            "gregorian",  // android-changed.  "buddhist",
                             "gregorian",
                             NULL };
 
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/calendar/CalendarRegressionTest.java b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/calendar/CalendarRegressionTest.java
index 8f73d16..134d170 100644
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/calendar/CalendarRegressionTest.java
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/calendar/CalendarRegressionTest.java
@@ -2150,32 +2150,36 @@
         Locale loc = new Locale("en", "TH");
         Calendar cal = Calendar.getInstance(loc);
         String calType = cal.getType();
-        if ( !calType.equals("buddhist")) {
-            errln("FAIL: Calendar type for en_TH should still be buddhist");
+        // Android patch: Force default Gregorian calendar.
+        if ( !calType.equals("gregorian")) {
+            errln("FAIL: Calendar type for en_TH should still be gregorian");
         }
+        // Android patch end.
     }
 
     @Test
     public void TestGetKeywordValuesForLocale(){
 
+        // Android patch: Force default Gregorian calendar.
         final String[][] PREFERRED = {
             {"root",        "gregorian"},
             {"und",         "gregorian"},
             {"en_US",       "gregorian"},
             {"en_029",      "gregorian"},
-            {"th_TH",       "buddhist", "gregorian"},
-            {"und_TH",      "buddhist", "gregorian"},
-            {"en_TH",       "buddhist", "gregorian"},
+            {"th_TH",       "gregorian", "buddhist"},
+            {"und_TH",      "gregorian", "buddhist"},
+            {"en_TH",       "gregorian", "buddhist"},
             {"he_IL",       "gregorian", "hebrew", "islamic", "islamic-civil", "islamic-tbla"},
             {"ar_EG",       "gregorian", "coptic", "islamic", "islamic-civil", "islamic-tbla"},
             {"ja",          "gregorian", "japanese"},
             {"ps_Guru_IN",  "gregorian", "indian"},
-            {"th@calendar=gregorian",   "buddhist", "gregorian"},
+            {"th@calendar=gregorian",   "gregorian", "buddhist"},
             {"en@calendar=islamic",     "gregorian"},
             {"zh_TW",       "gregorian", "roc", "chinese"},
-            {"ar_IR",       "persian", "gregorian", "islamic", "islamic-civil", "islamic-tbla"},
-            {"th@rg=SAZZZZ", "islamic-umalqura", "gregorian", "islamic", "islamic-rgsa"},
+            {"ar_IR",       "gregorian", "persian", "islamic", "islamic-civil", "islamic-tbla"},
+            {"th@rg=SAZZZZ", "gregorian", "islamic-umalqura", "islamic", "islamic-rgsa"},
         };
+        // Android patch end.
 
         String[] ALL = Calendar.getKeywordValuesForLocale("calendar", ULocale.getDefault(), false);
         HashSet ALLSET = new HashSet();
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/calendar/IBMCalendarTest.java b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/calendar/IBMCalendarTest.java
index 5b13c49..bec3b0e 100644
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/calendar/IBMCalendarTest.java
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/calendar/IBMCalendarTest.java
@@ -332,9 +332,11 @@
         // Thai locale
         Calendar cal = Calendar.getInstance(new ULocale("th_TH"));
         String type = cal.getType();
-        if (!type.equals("buddhist")) {
-            errln("FAIL: Buddhist calendar is not returned for locale " + cal.toString());
+        // Android patch: Force default Gregorian calendar.
+        if (!type.equals("gregorian")) {
+            errln("FAIL: Gregorian calendar is not returned for locale " + cal.toString());
         }
+        // Android patch end.
     }
 
     /**
@@ -1102,6 +1104,7 @@
                 "th@rg=SA",		// ignore malformed rg tag, use buddhist
         };
 
+        // Android patch: Force default Gregorian calendar.
         String[] types = {
                 "gregorian",
                 "japanese",
@@ -1113,17 +1116,18 @@
                 "buddhist",
                 "gregorian",
                 "gregorian",
-                "buddhist",
-                "buddhist",
-                "buddhist",
+                "gregorian",
+                "gregorian",
+                "gregorian",
                 "gregorian",    // iso8601 is a gregorian sub type
                 "gregorian",
-                "islamic-umalqura",
-                "islamic-umalqura",
+                "gregorian",
+                "gregorian",
                 "japanese",
-                "buddhist",
-                "buddhist",
+                "gregorian",
+                "gregorian",
         };
+        // Android patch end.
 
         for (int i = 0; i < locs.length; i++) {
             Calendar cal = Calendar.getInstance(new ULocale(locs[i]));
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/format/DateIntervalFormatTest.java b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/format/DateIntervalFormatTest.java
index 6129b0d..3ff45ed 100644
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/format/DateIntervalFormatTest.java
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/format/DateIntervalFormatTest.java
@@ -646,7 +646,9 @@
 
                 // Thai (default calendar buddhist)
 
-                "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E1E\\u0E38\\u0E18\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2550 \\u2013 \\u0E27\\u0E31\\u0E19\\u0E28\\u0E38\\u0E01\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2551",
+                // Android patch: Force default Gregorian calendar.
+
+                "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E40\\u0E2A\\u0E32\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2550 \\u2013 \\u0E27\\u0E31\\u0E19\\u0E2D\\u0E32\\u0E17\\u0E34\\u0E15\\u0E22\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2551",
 
 
                 "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "dMMM", "10 \\u0E15.\\u0E04. 2550 \\u2013 10 \\u0E15.\\u0E04. 2551",
@@ -654,14 +656,14 @@
                 "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "MMMy", "\\u0E15.\\u0E04. 2550 \\u2013 \\u0E15.\\u0E04. 2551",
 
 
-                "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EdMy", "\\u0E1E. 10/10/2550 \\u2013 \\u0E28. 10/10/2551",
+                "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EdMy", "\\u0E2A. 10/10/2550 \\u2013 \\u0E2D\\u0E32. 10/10/2551",
 
                 "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "dMy", "10/10/2550 \\u2013 10/10/2551",
 
 
                 "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "My", "10/2550 \\u2013 10/2551",
 
-                "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EdM", "\\u0E1E. 10/10/2550 \\u2013 \\u0E28. 10/10/2551",
+                "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "EdM", "\\u0E2A. 10/10/2550 \\u2013 \\u0E2D\\u0E32. 10/10/2551",
 
 
                 "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "y", "2550\\u20132551",
@@ -669,7 +671,7 @@
                 "th", "2550 10 10 10:10:10", "2551 10 10 10:10:10", "M", "10/2550 \\u2013 10/2551",
 
 
-                "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E1E\\u0E38\\u0E18\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. \\u2013 \\u0E27\\u0E31\\u0E19\\u0E40\\u0E2A\\u0E32\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E1E.\\u0E22. 2550",
+                "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E40\\u0E2A\\u0E32\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. \\u2013 \\u0E27\\u0E31\\u0E19\\u0E2D\\u0E31\\u0E07\\u0E04\\u0E32\\u0E23\\u0E17\\u0E35\\u0E48 10 \\u0E1E.\\u0E22. 2550",
 
 
                 "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "dMMM", "10 \\u0E15.\\u0E04. \\u2013 10 \\u0E1E.\\u0E22.",
@@ -683,11 +685,12 @@
 
                 "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "d", "10/10 \\u2013 10/11",
 
-                "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "y", "\u0E1E.\u0E28. 2550",
+                "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "y", "2550",
 
 
-                "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "MMM", "\\u0E15.\\u0E04.\\u2013\\u0E1E.\\u0E22.",
+                "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "MMM", "\\u0E15.\\u0E04. \\u2013 \\u0E1E.\\u0E22.",
 
+                // Android patch end.
         };
         expect(DATA, DATA.length);
     }
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/util/ICUResourceBundleTest.java b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/util/ICUResourceBundleTest.java
index 28f77b7..6294f0e 100644
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/util/ICUResourceBundleTest.java
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/util/ICUResourceBundleTest.java
@@ -754,6 +754,7 @@
 
     @Test
     public void TestFunctionalEquivalent(){
+       // Android patch: Force default Gregorian calendar.
        String[] calCases = {
        //  avail    locale                              equiv
            "t",     "en_US_POSIX",                      "en@calendar=gregorian",
@@ -761,10 +762,11 @@
            "f",     "ja_JP_TOKYO@calendar=japanese",    "ja@calendar=japanese",
            "t",     "sr@calendar=gregorian",            "sr@calendar=gregorian",
            "t",     "en",                               "en@calendar=gregorian",
-           "t",     "th_TH",                            "th@calendar=buddhist",
+           "t",     "th_TH",                            "th@calendar=gregorian",
            "t",     "th_TH@calendar=gregorian",         "th@calendar=gregorian",
-           "f",     "th_TH_Bangkok",                    "th@calendar=buddhist",
+           "f",     "th_TH_Bangkok",                    "th@calendar=gregorian",
        };
+       // Android patch end.
 
        logln("Testing functional equivalents for calendar...");
        getFunctionalEquivalentTestCases(ICUData.ICU_BASE_NAME,