Test case for Samoa time zone change:
Result with 2011c:
$ zdump -v Pacific/Apia | grep 2011 Pacific/Apia Sun Apr 3 10:59:59 2011 UTC = Sun Apr 3 00:59:59 2011 WSDT isdst=1 gmtoff=-36000 Pacific/Apia Sun Apr 3 11:00:00 2011 UTC = Sun Apr 3 00:00:00 2011 WST isdst=0 gmtoff=-39600
And updated result with 2011d:
$ zdump -v Pacific/Apia | grep 2011 Pacific/Apia Sat Apr 2 13:59:59 2011 UTC = Sat Apr 2 03:59:59 2011 WSDT isdst=1 gmtoff=-36000 Pacific/Apia Sat Apr 2 14:00:00 2011 UTC = Sat Apr 2 03:00:00 2011 WST isdst=0 gmtoff=-39600
Test case for Samoa time zone change:
Result with 2011c:
$ zdump -v Pacific/Apia | grep 2011
Pacific/Apia Sun Apr 3 10:59:59 2011 UTC = Sun Apr 3 00:59:59 2011 WSDT isdst=1 gmtoff=-36000
Pacific/Apia Sun Apr 3 11:00:00 2011 UTC = Sun Apr 3 00:00:00 2011 WST isdst=0 gmtoff=-39600
And updated result with 2011d:
$ zdump -v Pacific/Apia | grep 2011
Pacific/Apia Sat Apr 2 13:59:59 2011 UTC = Sat Apr 2 03:59:59 2011 WSDT isdst=1 gmtoff=-36000
Pacific/Apia Sat Apr 2 14:00:00 2011 UTC = Sat Apr 2 03:00:00 2011 WST isdst=0 gmtoff=-39600