--- old/src/jdk.localedata/share/classes/sun/util/resources/ext/TimeZoneNames_ja.java	2018-03-30 04:37:32.512667475 -0700
+++ new/src/jdk.localedata/share/classes/sun/util/resources/ext/TimeZoneNames_ja.java	2018-03-30 04:37:32.312667475 -0700
@@ -446,7 +446,7 @@
                                               "\u897f\u30b0\u30ea\u30fc\u30f3\u30e9\u30f3\u30c9\u590f\u6642\u9593", "WGST",
                                               "\u897F\u90E8\u30B0\u30EA\u30FC\u30F3\u30E9\u30F3\u30C9\u6642\u9593", "WGT"}},
             {"America/Goose_Bay", AST},
-            {"America/Grand_Turk", AST},
+            {"America/Grand_Turk", EST},
             {"America/Grenada", AST},
             {"America/Guadeloupe", AST},
             {"America/Guatemala", CST},