--- old/src/jdk.localedata/share/classes/sun/util/resources/ext/TimeZoneNames_it.java	2020-04-27 18:00:55.445642595 +0000
+++ new/src/jdk.localedata/share/classes/sun/util/resources/ext/TimeZoneNames_it.java	2020-04-27 18:00:55.009620592 +0000
@@ -252,6 +252,9 @@
         String WET[] = new String[] {"Ora dell'Europa occidentale", "WET",
                                      "Ora estiva dell'Europa occidentale", "WEST",
                                      "Ora dell'Europa occidentale", "WET"};
+        String WGT[] = new String[] {"Ora della Groenlandia occidentale", "WGT",
+                                     "Ora estiva della Groenlandia occidentale", "WGST",
+                                     "Ora della Groenlandia occidentale", "WGT"};
         String WIT[] = new String[] {"Ora dell'Indonesia occidentale", "WIB",
                                      "Ora estiva dell'Indonesia occidentale", "WIST",
                                      "Ora dell'Indonesia occidentale", "WIB"};
@@ -430,7 +433,7 @@
             {"America/Cuiaba", AMT},
             {"America/Curacao", AST},
             {"America/Danmarkshavn", GMT},
-            {"America/Dawson", PST},
+            {"America/Dawson", MST},
             {"America/Dawson_Creek", MST},
             {"America/Detroit", EST},
             {"America/Dominica", AST},
@@ -442,9 +445,7 @@
             {"America/Fort_Wayne", EST},
             {"America/Fortaleza", BRT},
             {"America/Glace_Bay", AST},
-            {"America/Godthab", new String[] {"Ora della Groenlandia occidentale", "WGT",
-                                              "Ora estiva della Groenlandia occidentale", "WGST",
-                                              "Ora della Groenlandia occidentale", "WGT"}},
+            {"America/Godthab", WGT},
             {"America/Goose_Bay", AST},
             {"America/Grand_Turk", EST},
             {"America/Grenada", AST},
@@ -512,6 +513,7 @@
             {"America/North_Dakota/Beulah", CST},
             {"America/North_Dakota/Center", CST},
             {"America/North_Dakota/New_Salem", CST},
+            {"America/Nuuk", WGT},
             {"America/Ojinaga", MST},
             {"America/Panama", EST},
             {"America/Pangnirtung", EST},
@@ -551,7 +553,7 @@
             {"America/Tortola", AST},
             {"America/Vancouver", PST},
             {"America/Virgin", AST},
-            {"America/Whitehorse", PST},
+            {"America/Whitehorse", MST},
             {"America/Winnipeg", CST},
             {"America/Yakutat", AKST},
             {"America/Yellowknife", MST},
@@ -782,7 +784,7 @@
             {"Canada/Mountain", MST},
             {"Canada/Newfoundland", NST},
             {"Canada/Pacific", PST},
-            {"Canada/Yukon", PST},
+            {"Canada/Yukon", MST},
             {"Canada/Saskatchewan", CST},
             {"CAT", CAT},
             {"CET", CET},