Time zones in the USA
The USA uses the following time zones, order from east to west. Daylight Savings Time is observed in some parts of the USA, but not everywhere.
- Winter (standard) time zones
- Eastern Standard Time (EST)
- Central Standard Time (CST)
- Mountain Standard Time (MST)*
- Pacific Standard Time (PST)
- Alaska Standard Time (AKST)
- Hawaii-Aleutian Standard Time (HST)
- Summer (Daylight Savings) time zones
- Eastern Daylight Time (EDT)
- Central Daylight Time (CDT)
- Mountain Daylight Time (MDT)*
- Pacific Daylight Time (PDT)
- Alaska Daylight Time (AKDT)
- (no Daylight Savings for HST)
* Some locations in this time zone do not observe Daylight Savings Time. For further details, please click the link for your specific time zone or location.
States in the USA
For more detailed information about specific locations in the USA, choose a state from the list below.
External territories of the USA
These areas may use time zones not listed above. Please click for more information.