Hi, I don't know if this is right, could you help me? Sun Dec 30th 2007 we go GMT-0200, Sun Mar 16th 2008 we return GMT-0300 # Rule Arg 2007 only - Dec 30 0:00 1:00 S Rule Arg 2008 only - Mar 16 0:00 0 - # ... # Buenos Aires (BA), Capital Federal (CF), Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May # Cordoba Mean Time -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -2:00 Arg AR%sT 2007 Dec 30 -3:00 Arg AR%sT 2008 Mar 16 -3:00 - ART # Thanks, Eduardo.- ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.