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The International Date Line (IDL) is the line extending between the South and North Poles that is the boundary between one calendar day and the next. It passes through the Pacific Ocean, roughly following the 180.0° line of longitude and deviating to pass around some territories and island groups. Crossing the date line eastbound decreases the ...
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. The zone takes its name from the two areas it includes: Hawaii and the ...
The term "GMT" is also used as one of the names for the time zone UTC+00:00 and, [2] in UK law, is the basis for civil time in the United Kingdom. [ 3 ] [ a ] Because of Earth's uneven angular velocity in its elliptical orbit and its axial tilt , noon (12:00:00) GMT is rarely the exact moment the Sun crosses the Greenwich Meridian [ b ] and ...
Time zones of the world. A time zone is an area which observes a uniform standard time for legal, commercial and social purposes. Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude, because it is convenient for areas in frequent communication to keep the same time.
This is a list of the UTC time offsets, showing the difference in hours and minutes from Coordinated Universal Time (UTC), from the westernmost (−12:00) to the easternmost (+14:00). It includes countries and regions that observe them during standard time or year-round. The main purpose of this page is to list the current standard time offsets ...
History. Before 1896, Hawaii did not use a standard time zone. 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 ...
Anywhere on Earth. World map of time zones, with the UTC−12 time zone highlighted. Anywhere on Earth (AoE) is a calendar designation that indicates that a period expires when the date passes everywhere on Earth. It is a practice to help specify deadlines such as "March 16, 2004, End of Day, Anywhere on Earth (AoE)" [1] without requiring ...
Gambier Island Time: UTC−09: GMT: Greenwich Mean Time: UTC±00: GST: South Georgia and the South Sandwich Islands Time: UTC−02: GST: Gulf Standard Time: UTC+04: GYT: Guyana Time: UTC−04: HDT: Hawaii–Aleutian Daylight Time: UTC−09: HAEC: Heure Avancée d'Europe Centrale French-language name for CEST UTC+02: HST: Hawaii–Aleutian ...