time zone locations in usa
The continental United States (the 48 contiguous states) is divided into 4 time zones: 1  Eastern Standard Time ( EST ), the time zone New York is in, which is 5 hours behind Greenwich mean Time (GMT) 2  Central Standard Time ( CST ), the time zone Chicago is in, which is 6 hours behind Greenwich Meantime (GMT)
Alaska and Hawaii have their own time zones: Alaska Standard Time ( AKST ) and Hawaii Standard Time ( HST ) respectively. Daylight Saving Time begins for most of the United States at 2 a.m. on the second Sunday of March. Time reverts to standard time at 2 a.m. on the first Sunday of November.