Yukon Standard Time Zone
Encyclopedia
The Yukon Standard Time Zone (YST) was a geographic region that kept standard time
by subtracting nine hours from Coordinated Universal Time
(UTC) resulting in UTC−9 after 1971, or from Greenwich Mean Time
(GMT) before 1972.
It included the Yukon
, as well as a small region around Yakutat
, Alaska
(Alaska had been spread across four different time zone
s at the time). However, in 1975, the Yukon officially switched to Pacific Time zone
(PST), which is UTC−8. Moreover, Alaska switched in 1983 from four time zones to two time zones, placing most of the state in Alaska Standard Time Zone (AKST), the time zone formerly known as Yukon Standard Time Zone, while the Aleutian
Islands remained in the Hawaii-Aleutian Standard Time Zone (until 1983 known as the Alaska-Hawaii Standard Time Zone).
Yukon Standard Time Zone is the same as Alaska Standard Time Zone. The only difference is that the name of the time zone was officially changed from Yukon Standard Time Zone to Alaska Standard Time Zone following the Alaska switch from four different time zones to predominantly UTC−9 in 1983.
Standard time
Standard time is the result of synchronizing clocks in different geographical locations within a time zone to the same time rather than using the local meridian as in local mean time or solar time. Historically, this helped in the process of weather forecasting and train travel. The concept...
by subtracting nine hours from Coordinated Universal Time
Coordinated Universal Time
Coordinated Universal Time is the primary time standard by which the world regulates clocks and time. It is one of several closely related successors to Greenwich Mean Time. Computer servers, online services and other entities that rely on having a universally accepted time use UTC for that purpose...
(UTC) resulting in UTC−9 after 1971, or from Greenwich Mean Time
Greenwich Mean Time
Greenwich Mean Time is a term originally referring to mean solar time at the Royal Observatory in Greenwich, London. It is arguably the same as Coordinated Universal Time and when this is viewed as a time zone the name Greenwich Mean Time is especially used by bodies connected with the United...
(GMT) before 1972.
It included the Yukon
Yukon
Yukon is the westernmost and smallest of Canada's three federal territories. It was named after the Yukon River. The word Yukon means "Great River" in Gwich’in....
, as well as a small region around Yakutat
Yakutat
Yakutat may refer to:Geography*Yakutat Airport, a state-owned public-use airport in Alaska in the United States*Yakutat Bay, a bay on the coast of Alaska*Yakutat City and Borough, Alaska, a unified city-borough in AlaskaGeology...
, Alaska
Alaska
Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...
(Alaska had been spread across four different time zone
Time zone
A time zone is a region on Earth that has a uniform standard time for legal, commercial, and social purposes. In order for the same clock time to always correspond to the same portion of the day as the Earth rotates , different places on the Earth need to have different clock times...
s at the time). However, in 1975, the Yukon officially switched to Pacific Time zone
Pacific Time Zone
The Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time . The clock time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory. During daylight saving time, its time offset is UTC-7.In the United States...
(PST), which is UTC−8. Moreover, Alaska switched in 1983 from four time zones to two time zones, placing most of the state in Alaska Standard Time Zone (AKST), the time zone formerly known as Yukon Standard Time Zone, while the Aleutian
Aleutian
Aleutian may refer to:*The Aleut people, the indigenous people of the Aleutian Islands, the Pribilof Islands, the Shumagin Islands, and the far western part of the Alaska Peninsula in Alaska and of Kamchatka Krai, Russia....
Islands remained in the Hawaii-Aleutian Standard Time Zone (until 1983 known as the Alaska-Hawaii Standard Time Zone).
Yukon Standard Time Zone is the same as Alaska Standard Time Zone. The only difference is that the name of the time zone was officially changed from Yukon Standard Time Zone to Alaska Standard Time Zone following the Alaska switch from four different time zones to predominantly UTC−9 in 1983.
See also
- Mountain Standard Time Zone
- Central Standard Time Zone
- Eastern Standard Time Zone
- Atlantic Standard Time ZoneAtlantic Standard Time ZoneThe Atlantic Standard Time Zone is a geographical region that keeps time by subtracting four hours from either Coordinated Universal Time or Greenwich Mean Time , resulting in UTC-4 or GMT-4...
- Newfoundland Standard Time ZoneNewfoundland Standard Time ZoneNewfoundland Standard Time ' is a geographic region that keeps time by subtracting 3½ hours from Coordinated Universal Time , resulting in UTC−3:30, or 2½ hours during daylight saving time...
- Saskatchewan TimeTime in SaskatchewanMost of the Province of Saskatchewan observes Central Standard Time year round. However, since the province is geographically located in the Mountain Time Zone , it is effectively on daylight saving time year round.-History:In 1912, the first law was passed that called for the use of...