The United States is divided into six time zones: Alaska time, Pacific time, Central time and Eastern time, Hawaii-Aleutian time, and Mountain time.
USA Time Zones Map
About Map - Map showing Time zones of the 50 states of United States.
U.S. Time Zones
By law, time in the United States (US) and its possessions is divided into nine standard time zones, with most of the United States observing the daylight saving time (DST) for the spring, summer, and fall months.
As of Department of Transportation, the Federal Register and other sources, the United States is divided into six time zones: Alaska time, Pacific time, Central time and Eastern time, Hawaii-Aleutian time, and Mountain time.
These are 15 U.S. States have more than one time zone; Alaska, Arizona, Florida, Idaho, Indiana, Kansas, Kentucky, Michigan, Nebraska, Nevada, North Dakota, Oregon, South Dakota, Tennessee and Texas.
U.S. Daylight Saving Time
Daylight Saving Time (DST) is the practice of setting the clocks forward by one hour in the spring and set clocks back by one hour in autumn. Most of the United States begins Daylight Saving Time at 2 a.m. on the second Sunday in March and ends at 2 a.m. on the first Sunday in November. Two states don't observe daylight saving time, Arizona and Hawaii.
List of Time Zones of the United States
| Time Zone | DST | Standard | States |
|---|---|---|---|
| Eastern Time Zone | UTC−04:00 | UTC−05:00 | Connecticut, Delaware, District of Columbia, Georgia, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Vermont, Virginia, West Virginia; Florida, Indiana, Kentucky, Michigan, Tennessee |
| Central Time Zone | UTC−05:00 | UTC−06:00 | Alabama, Arkansas, Illinois, Iowa, Louisiana, Minnesota, Mississippi, Missouri, Oklahoma, Wisconsin; Florida, Indiana, Kansas, Kentucky, Michigan, Nebraska, North Dakota, South Dakota, Tennessee, Texas |
| Mountain Time Zone | UTC−06:00 | UTC−07:00 | Arizona (no DST), Colorado, Montana, New Mexico, Utah, Wyoming; Partially: Idaho, Kansas, Nebraska, North Dakota, Oregon, South Dakota, Texas |
| Pacific Time Zone | UTC−07:00 | UTC−08:00 | California, Nevada, Washington (state); Partially: Idaho, Oregon |
| Alaska Time Zone | UTC−08:00 | UTC−09:00 | Partially: Alaska |
| Hawaii-Aleutian | UTC−09:00 | UTC−10:00 | Hawaii |
| American Samoa | NA | UTC−11:00 | American Samoa |
| NA | UTC−12:00 | Baker Island, Howland Island | |
| NA | UTC+12:00 | Wake Island | |
| Atlantic Time Zone | NA | UTC−04:00 | Puerto Rico, U.S. Virgin Islands |
| Chamorro | NA | UTC+10:00 | Guam, Northern Mariana Islands |
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