--- old/src/jdk.localedata/share/classes/sun/util/resources/ext/TimeZoneNames_pt_BR.java	2018-03-30 04:37:33.924667475 -0700
+++ new/src/jdk.localedata/share/classes/sun/util/resources/ext/TimeZoneNames_pt_BR.java	2018-03-30 04:37:33.720667475 -0700
@@ -446,7 +446,7 @@
                                               "Fuso hor\u00e1rio de ver\u00e3o da Groenl\u00e2ndia Ocidental", "WGST",
                                               "Hor\u00E1rio da Groenl\u00E2ndia Ocidental", "WGT"}},
             {"America/Goose_Bay", AST},
-            {"America/Grand_Turk", AST},
+            {"America/Grand_Turk", EST},
             {"America/Grenada", AST},
             {"America/Guadeloupe", AST},
             {"America/Guatemala", CST},