Looks like CEST is not honored anymore, TZ=CET works okay. Haven't investigated when it stopped working. $ TZ=CET date Sun Feb 28 14:22:32 CET 2010 $ TZ=CEST date Sun Feb 28 13:22:34 GMT 2010 $ uname -a CYGWIN_NT-5.1 reini 1.7.1(0.218/5/3) 2009-12-07 11:48 i686 Cygwin -- Reini Urban http://phpwiki.org/ http://murbreak.at/