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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.
UTC+00:00 is an identifier for a time offset from UTC of +00:00. This time zone is the basis of Coordinated Universal Time (UTC) and all other time zones are based on it. In ISO 8601, an example of the associated time would be written as 2069-01-01T12:12:34+00:00. It is also known by the following geographical or historical names:
The most extreme example of this is time in China, which applies a single standard time offset of UTC+08:00 (eight hours ahead of Coordinated Universal Time), even though China spans five geographical time zones. The UTC offset (or time offset) is an amount of time added to Coordinated Universal Time (UTC) time to specify the time at a given ...
Most of state: UTC−06:00 CST Central Standard Time UTC−07:00 MT Nebraska Panhandle, counties with Colorado as a western boundary, and the western Sand Hills: UTC−07:00 MST Mountain Standard Time Nevada: UTC−07:00 MT Yes West Wendover city limits: UTC−07:00 MST Mountain Standard Time UTC−08:00 PT Most of state: UTC−08:00 PST ...
France, including its overseas territories, has the most time zones with 12 (13 including its claim in Antarctica and all other counties). Many countries have daylight saving time, one added hour during the local summer, but this list does not include that information. The UTC offset in the list is not valid in practice during daylight saving time.
Hall Island (Alaska), at longitude 173°6′W, is the westernmost area of Alaska that observes UTC−09:00, but is far west of the theoretical zone limits (−142.5° to −127.5° longitude). Its position equates to a mean solar time of UTC−11:32 .
At the end of 29 December 2011 (UTC−10:00), Samoa advanced its standard time from UTC−11:00 to UTC+13:00 (and its daylight saving time from UTC−10:00 to UTC+14:00), essentially moving the international date line to the other side of the country, skipping 30 December 2011.
ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data.It is maintained by the International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. [1]