'EST' and 'EDT' Are Different Time Zones
by Beth Skwarecki from Lifehacker on (#3QERQ)
This year, Daylight Saving Time starts on March 14 and lasts all summer-and if you don't commit that fact to memory you will one day screw up something time zone related. So, remember: summer is daylight time (EDT if you're on the east coast) and winter is standard time (EST).