--- old/src/java.base/share/classes/sun/util/resources/TimeZoneNames.java	2018-03-30 04:37:29.016667475 -0700
+++ new/src/java.base/share/classes/sun/util/resources/TimeZoneNames.java	2018-03-30 04:37:28.820667475 -0700
@@ -445,7 +445,7 @@
                                               "Western Greenland Summer Time", "WGST",
                                               "Western Greenland Time", "WGT"}},
             {"America/Goose_Bay", AST},
-            {"America/Grand_Turk", AST},
+            {"America/Grand_Turk", EST},
             {"America/Grenada", AST},
             {"America/Guadeloupe", AST},
             {"America/Guatemala", CST},