I am doing a website where I collect the time and date from the users when they create an event...once they create it, I want to show something like this in http://www.groupon.com/washington-dc/ (check time left to buy). i there any direct way in php/mysql. also how to handle the time zone? if a person from california is seeing the event , he/she shouldn't see the same "time left" like NY users...how to handle this?

selamlar