Dear sir, Sorry for making trouble. Parliament of Mongolia has just changed the daylight-saving rule in February. They decided not to adopt daylight-saving time. Could you please make appropriate changes to asia zone file? Following lines: Rule Mongol 2001 max - Sep lastSat 2:00 0 - Rule Mongol 2002 max - Mar lastSat 2:00 1:00 S could be changed to: Rule Mongol 2001 2006 - Sep lastSat 2:00 0 - Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 S Maybe I'm wrong here. Please let me know if you have any questions. sincerely, Ganbold Ts. Mongolia