you need to format the date.
for instance:
$date = date("l F d , Y h:i A", time()+60*60*3);
that would set the time to the UNIX day on East Coast Time. So, for instance, my server is on the west coast. I need to increase its time by 3 hours (that's where that "*3" comes from).
The format would look similar to this (understanding that the given date/time is January 1, 2005 1:00PM):
Saturday January 1, 2005 1:00 PM
hope that helps.
if not, check here