src/jdk.localedata/share/classes/sun/util/resources/ext/TimeZoneNames_es.java

@@ -428,11 +428,11 @@
             {"America/Cordoba", AGT},
             {"America/Costa_Rica", CST},
             {"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},
             {"America/Edmonton", MST},
             {"America/Eirunepe", ACT},

@@ -549,11 +549,11 @@
             {"America/Tijuana", PST},
             {"America/Toronto", EST},
             {"America/Tortola", AST},
             {"America/Vancouver", PST},
             {"America/Virgin", AST},
-            {"America/Whitehorse", PST},
+            {"America/Whitehorse", MST},
             {"America/Winnipeg", CST},
             {"America/Yakutat", AKST},
             {"America/Yellowknife", MST},
             {"Antarctica/Casey", WST_AUS},
             {"Antarctica/Davis", new String[] {"Hora de Davis", "DAVT",

@@ -780,11 +780,11 @@
             {"Canada/Central", CST},
             {"Canada/Eastern", EST},
             {"Canada/Mountain", MST},
             {"Canada/Newfoundland", NST},
             {"Canada/Pacific", PST},
-            {"Canada/Yukon", PST},
+            {"Canada/Yukon", MST},
             {"Canada/Saskatchewan", CST},
             {"CAT", CAT},
             {"CET", CET},
             {"Chile/Continental", CLT},
             {"Chile/EasterIsland", EASTER},