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United States of America
The United States of America (commonly referred to as the United States, the U.S., the USA, or America) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its forty-eight contiguous states and...
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8 Time Zone topics matching:
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Central Time zone
The Central Time Zone is in the Americas and observes standard time by subtracting six hours from UTC during standard time (UTC–6) and five hours during daylight saving time (UTC–5). The clock time in this zone, composed almost totally of a strip of...
Offset from UTC:
- -6 h (-22 ks )
Locations in this time zone:
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North American Eastern Time Zone
The Eastern Time Zone (ET or NAEST: North American Eastern Standard Time) of the Western Hemisphere falls mostly along the east coast of North America and the west coast of South America. Its time offset is −5 hrs GMT or UTC−5 during standard time...
Day DST begins:
Day DST ends:
Offset from UTC:
- -5 h (-18 ks )
Mountain Time Zone
The Mountain Time Zone of North America keeps time by subtracting seven hours from Coordinated Universal Time, sometimes called Greenwich Mean Time (UTC−7) during the shortest days of autumn and winter, and by subtracting six hours during daylight...
Offset from UTC:
- -7 h (-25 ks )
Locations in this time zone:
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Pacific Time Zone
The Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time (UTC-8). The clock time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory. During daylight...
Offset from UTC:
- -8 h (-29 ks )
Locations in this time zone:
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Alaska Time Zone
The Alaska Time Zone observes standard time by subtracting nine hours from Coordinated Universal Time (UTC−9). During daylight saving time its time offset is only eight hours (UTC−8). The clock time in this zone is based on the mean solar time of...
Offset from UTC:
- -9 h (-32 ks )
Locations in this time zone:
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Hawaii-Aleutian time zone
The Hawaii-Aleutian Time Zone observes Hawaii-Aleutian Standard Time (HAST), by subtracting ten hours from Coordinated Universal Time (UTC-10). The clock time in this zone is based on the mean solar time of the 150th meridian west of the Greenwich...
Offset from UTC:
- -10 h (-36 ks )
Locations in this time zone:
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Atlantic Standard Time Zone
The Atlantic Standard Time Zone (AST) is a geographical region that keeps time by subtracting four hours from either Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT), resulting in UTC-4 or GMT-4. The clock time in this zone is based on...
Offset from UTC:
- -4 h (-14 ks )
Locations in this time zone:
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Samoa Time Zone
The Samoa Time Zone observes standard time by subtracting eleven hours from Coordinated Universal Time (UTC-11). The clock time in this zone is based on the mean solar time of the 165th meridian west west of the Greenwich Observatory.
The zone...
Offset from UTC:
- -11 h (-40 ks )
