Make the new Date test independent of the timezone in which it is run.

test/mjsunit/date.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 30 matching lines @@
 assertEquals(date0, date1);
 assertEquals(date1, date2);
 assertEquals(date2, date3);
 
 // Test limits (+/-1e8 days from epoch)
 
 var dMax = new Date(8.64e15);
 assertEquals(8.64e15, dMax.getTime());
 assertEquals(275760, dMax.getFullYear());
 assertEquals(8, dMax.getMonth());
-assertEquals(13, dMax.getDate());
+assertEquals(13, dMax.getUTCDate());
 
 var dOverflow = new Date(8.64e15+1);
 assertTrue(isNaN(dOverflow.getTime()));
 
 var dMin = new Date(-8.64e15);
 assertEquals(-8.64e15, dMin.getTime());
 assertEquals(-271821, dMin.getFullYear());
 assertEquals(3, dMin.getMonth());
-assertEquals(20, dMin.getDate());
+assertEquals(20, dMin.getUTCDate());
 
 var dUnderflow = new Date(-8.64e15-1);
 assertTrue(isNaN(dUnderflow.getTime()));
 
 
 // Tests inspired by js1_5/Date/regress-346363.js
 
 // Year
 var a = new Date();
 a.setFullYear();
@@ skipping 89 matching lines @@
 
 assertEquals(Date.UTC(275760, 8, 12, 23, 59, 59, 999), 8639999999999999);
 assertEquals(Date.UTC(275760, 8, 13), 8640000000000000);
 assertTrue(isNaN(Date.UTC(275760, 8, 13, 0, 0, 0, 1)));
 assertTrue(isNaN(Date.UTC(275760, 8, 14)));
 
 assertEquals(Date.UTC(-271821, 3, 20, 0, 0, 0, 1), -8639999999999999);
 assertEquals(Date.UTC(-271821, 3, 20), -8640000000000000);
 assertTrue(isNaN(Date.UTC(-271821, 3, 19, 23, 59, 59, 999)));
 assertTrue(isNaN(Date.UTC(-271821, 3, 19)));