Does anyone have a method or function for telling if a datetime is within the DST switchover based on the time zone? For example, if the script were running in England, a datetime of March 29 2015 01:30 would return True. If it were running in NY, March 8 2015 02:30 would return True. I'm looking for something that would work for any time zone and for any year. The use case is that I have a server uptime reporting script and it uses a database of times that the server was able to be pinged. If there is no entry for a period it indicated the server was down. So on March 29, running in London, it found no entries from 1am to 2am and it reported the server was down for an hour, when in fact the period from 1am to 2am did not exist because of the switch to summer time. TIA! -larry -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php