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The Hawaii–Aleutian Time Zone observes Hawaii–Aleutian Standard Time (HST) [1] [2] by subtracting ten hours from Coordinated Universal Time (UTC−10:00).The clock time in this zone is based on the mean solar time of the 150th meridian west of the Greenwich Observatory.
On January 8, 1896, the minister of the interior of the Provisional Government of Hawaii created a standard time zone, Hawaiian Standard Time, which was set at UTC−10:30. Hawaii began observing Hawaiian Standard Time on January 13, 1896, at noon. [3] [4] On May 19, 1947, the Hawaii Territorial Legislature approved a bill to change Hawaiian ...
This is a list of time zone abbreviations. ... Hawaii–Aleutian Standard Time: UTC−10:00: HKT: Hong Kong Time: UTC+08:00: HMT: Heard and McDonald Islands Time UTC+ ...
Time zone abbreviations for both Standard Time and Daylight Saving Time are shown exactly as they appear in the database. See strftime and its "%Z" field. Some of zone records use 3 or 4 letter abbreviations that are tied to physical time zones, others use numeric UTC offsets.
Map of U.S. time zones with new CST and EST areas displayed. Some U.S. time zones, such as the Samoa Time Zone, are not on this map. This is a list of the time offsets by U.S. states, federal district, and territories. For more about the time zones of the U.S. see time in the United States. Most states are entirely contained within one time zone.
The evolution of United States standard time zone boundaries from 1919 to 2024 in five-year increments. Plaque in Chicago marking the creation of the four time zones of the continental US in 1883 Colorized 1913 time zone map of the United States, showing boundaries very different from today Map of U.S. time zones during between April 2, 2006, and March 11, 2007.
This zone was renamed in 1983 [3] to Hawaii–Aleutian Standard Time when the majority of Alaska was moved out of the zone. Prior to 1983, the current Alaska Time Zone (UTC−09:00) was known as the Yukon Time Zone, observing Yukon Standard Time (YST). This time zone included Canada's Yukon Territory and a small portion of Alaska including Yakutat.
This is a list representing time zones by country. Countries are ranked by total number of time zones on their territory. Time zones of a country include that of dependent territories (except Antarctic claims). France, including its overseas territories, has the most time zones with 12 (13 including its claim in Antarctica and all other counties).