http://bugs.winehq.org/show_bug.cgi?id=36374
--- Comment #4 from Sebastian Lackner sebastian@fds-team.de --- Just a small remark: This problem will start happing again in the year 2017, when its not possible anymore, to express the timezone in the Wine "compressed format" (day of week + week number).
Windows solves this problem by using a list of exceptions, called "Dynamic DST". Michael Müller wrote a patch to implement that missing feature in Wine, I assume he'll also submit his patch during the next few days:
https://dl.dropboxusercontent.com/u/61413222/0001-ntdll-try-to-use-dynamic-d...
(It still lacks the list of exceptions, which have to be generated somehow)