What are the differnet time zones in usa and what r the differences in times?
The continental United States (the 50 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) 3. Mountain Standard Time (MST), which is 7 hours behind Greenwich Mean Time (GMT) 4. Pacific Standard Time (PST), the time zone Los Angeles is in, which is 8 hours behind Greenwich Mean Time (GMT) Alaska and Hawaii have their own time zones: Alaska Standard Time (AKST) and Hawaii Standard Time (HST) respectively.