Original review https://codereview.chromium.org/25855005.

test/intl/date-format/parse-MMMdy.js

 // Copyright 2013 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 12 matching lines @@
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Testing v8Parse method for date and time pattern.
 // Month is represented as a short name.
 
 var dtf = new Intl.DateTimeFormat(['en'],
                                   {year: 'numeric', month: 'short',
-                                   day: 'numeric'});
+                                   day: 'numeric',
+                                   timeZone: 'America/Los_Angeles'});
 
 // Make sure we have pattern we expect (may change in the future).
 assertEquals('MMM d, y', dtf.resolved.pattern);
 
-assertEquals('Sat May 04 1974 00:00:00 GMT-0007 (PDT)',
-             usePDT(String(dtf.v8Parse('May 4, 1974'))));
+var date = dtf.v8Parse('Feb 4, 1974');
+assertEquals(1974, date.getUTCFullYear());
+assertEquals(1, date.getUTCMonth());
+assertEquals(4, date.getUTCDate());
 
 // Missing , in the pattern.
-assertEquals(undefined, dtf.v8Parse('May 4 1974'));
+assertEquals(undefined, dtf.v8Parse('Feb 4 1974'));
 
 // Extra "th" after 4 in the pattern.
-assertEquals(undefined, dtf.v8Parse('May 4th, 1974'));
+assertEquals(undefined, dtf.v8Parse('Feb 4th, 1974'));
 
 // Wrong pattern.
-assertEquals(undefined, dtf.v8Parse('5/4/1974'));
+assertEquals(undefined, dtf.v8Parse('2/4/1974'));