http://bugs.winehq.org/show_bug.cgi?id=28560
--- Comment #32 from Dmitry Timoshkov dmitry@baikal.ru 2011-10-20 11:39:55 CDT --- (In reply to comment #31)
(In reply to comment #30)
system timezone = Europe/Moscow. bias -240 = OK. but wine shows timezone for bias=-240 as "Arabian Standard Time".
Yes, that's because the registry timezone info needs an update.
To clarify things: first timezone name with appropriate properties gets picked up from the registry, and there is no guarantee that the selected name will match the real location. That shouldn't be a problem in reality except some minor discomfort seeing yourself assigned wrong country :).