Parsing dates with format that's just month or day will fail on certain days

pkg/intl/test/date_time_format_test.dart

 /**
  * Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
  * for details. All rights reserved. Use of this source code is governed by a
  * BSD-style license that can be found in the LICENSE file.
  */
 
 #library('date_time_format_test');
 
 #import('../intl.dart');
 #import('../date_format.dart');
@@ skipping 137 matching lines @@
   // the skeleton WEEKDAY can't be reconstructed at all, and YEAR_MONTH
   // formats don't give us enough information to construct a valid date.
   var badSkeletons = [
       DateFormat.ABBR_WEEKDAY,
       DateFormat.WEEKDAY,
       DateFormat.QUARTER,
       DateFormat.ABBR_QUARTER,
       DateFormat.YEAR,
       DateFormat.YEAR_NUM_MONTH,
       DateFormat.YEAR_ABBR_MONTH,
-      DateFormat.YEAR_MONTH];
+      DateFormat.YEAR_MONTH,
+      DateFormat.MONTH_WEEKDAY_DAY,
+      DateFormat.NUM_MONTH_WEEKDAY_DAY,
+      DateFormat.ABBR_MONTH_WEEKDAY_DAY];
   for(int i = 0; i < formatsToTest.length; i++) {
     var skeleton = formatsToTest[i];
     if (!badSkeletons.some((x) => x == skeleton)) {
       var format = new DateFormat(skeleton, localeName);
       var actualResult = format.format(date);
       var parsed = format.parse(actualResult);
       var thenPrintAgain = format.format(parsed);
       expect(thenPrintAgain, equals(actualResult));
     }
   }
@@ skipping 130 matching lines @@
     var localPrinted = format.format(local);
     var parsed = format.parse(localPrinted);
     var parsedUTC = format.parseUTC(format.format(utc));
     var parsedOffset = parsedUTC.millisecondsSinceEpoch
         - parsed.millisecondsSinceEpoch;
     expect(parsedOffset, equals(offset));
     expect(utc.hour, equals(parsedUTC.hour));
     expect(local.hour, equals(parsed.hour));
     });
 }