Of course Etc/GMT-4 would be the most generic form. (note the inverted sign is deliberate) AZT-4 will work for POSIX compliant systems, but not necessarily with all systems. I'm not 100% sure but I don't think it would work in Java, for example. -Matt ________________________________________ From: tz-bounces@iana.org <tz-bounces@iana.org> on behalf of Paul Eggert <eggert@cs.ucla.edu> Sent: Wednesday, March 23, 2016 4:01 PM To: Time Zone Mailing List Cc: Chingiz Sadigov; Özgün Dönmez (Azerbaycan); Sezai Çam; Burak AYDIN; Anar Qocayev; Gökhan Çatalkaya; Nihat Şenyuva (Azerbaycan); Fikret Agayev Subject: [tz] Azerbaijan canceled daylight saving time Thanks to everybody who sent in a heads-up about Azerbaijan. Release 2016c of the tz database (released today) has an update for Asia/Baku that should bring it up to date. Please see: http://mm.icann.org/pipermail/tz-announce/2016-March/000037.html Although 2016c should eventually propagate into the systems that use the tz database, this propagation process may take a while. As a temporary workaround Azerbaijani users can set the time zone to some other value in order to have computer-based clocks work correctly for time stamps after this weekend. Possible TZ settings include 'AZT-4', 'Asia/Dubai', 'Asia/Tbilisi', 'Asia/Yerevan', and 'Europe/Samara'.