Major time zones in the United States

Here is a list of the major time zones in the United States, along with their corresponding regions and GMT offsets.

1. Eastern Time Zone (ET):

   • Region: Eastern United States, including cities like New York and Atlanta.
   • GMT Offset: GMT-5 (Eastern Standard Time, EST)
   • During Daylight Saving Time: GMT-4 (Eastern Daylight Time, EDT)

2. Central Time Zone (CT):

   • Region: Central United States, including cities like Chicago and Dallas.
   • GMT Offset: GMT-6 (Central Standard Time, CST)
   • During Daylight Saving Time: GMT-5 (Central Daylight Time, CDT)

3. Mountain Time Zone (MT):

   • Region: Mountainous western states, including Denver and Phoenix.
   • GMT Offset: GMT-7 (Mountain Standard Time, MST)
   • During Daylight Saving Time: GMT-6 (Mountain Daylight Time, MDT)

4. Pacific Time Zone (PT):

   • Region: Western coastal states, including Los Angeles and Seattle.
   • GMT Offset: GMT-8 (Pacific Standard Time, PST)
   • During Daylight Saving Time: GMT-7 (Pacific Daylight Time, PDT)

5. Alaska Time Zone (AKT):

   • Region: State of Alaska.
   • GMT Offset: GMT-9 (Alaska Standard Time, AKST)
   • During Daylight Saving Time: GMT-8 (Alaska Daylight Time, AKDT)

6. Hawaii-Aleutian Time Zone (HST):

   • Region: State of Hawaii and the Aleutian Islands of Alaska.
   • GMT Offset: GMT-10 (Hawaii Standard Time, HST)
   • During Daylight Saving Time: GMT-9 (Hawaii-Aleutian Daylight Time, HADT)

7. Samoa Standard Time (SST):

   • Region: American Samoa.
   • GMT Offset: GMT-11 (Samoa Standard Time, SST)

8. Chamorro Standard Time (ChST):

   • Region: Guam and the Northern Mariana Islands.
   • GMT Offset: GMT+10 (Chamorro Standard Time, ChST)