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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.
Greenwich Mean Time (GMT) is the local mean time at the Royal Observatory in Greenwich, London, counted from midnight. At different times in the past, it has been calculated in different ways, including being calculated from noon ; [ 1 ] as a consequence, it cannot be used to specify a particular time unless a context is given.
This is an incomplete list of notable applications (apps) that run on iOS where source code is available under a free software/open-source software license. Note however that much of this software is dual-licensed for non-free distribution via the iOS app store; for example, GPL licenses are not compatible with the app store. [citation needed]
Western European Time (WET, UTC+00:00) is a time zone covering parts of western Europe and consists of countries using UTC+00:00 (also known as Greenwich Mean Time, abbreviated GMT). [1] [2] It is one of the three standard time zones in the European Union along with Central European Time and Eastern European Time. [3] [2]
This is an accepted version of this page This is the latest accepted revision, reviewed on 17 February 2025. Primary time standard "UTC" redirects here. For the time zone between UTC−1 and UTC+1, see UTC+00:00. For other uses, see UTC (disambiguation). It has been suggested that UTC offset be merged into this article. (Discuss) Proposed since December 2024. Current time zones Coordinated ...
In communications messages, a date-time group (DTG) is a set of characters, usually in a prescribed format, used to express the year, the month, the day of the month, the hour of the day, the minute of the hour, and the time zone, if different from Coordinated Universal Time (UTC).
Pale colours: Standard time observed all year Dark colours: Summer time observed During British Summer Time (BST), civil time in the United Kingdom is advanced one hour forward of Greenwich Mean Time (GMT), in effect changing the time zone from UTC+00:00 to UTC+01:00, so that mornings have one hour less daylight, and evenings one hour more.
In some countries, the term Greenwich Mean Time persists in common usage to this day in reference to UT1, in civil timekeeping as well as in astronomical almanacs and other references. Whenever a level of accuracy better than one second is not required, UTC can be used as an approximation of UT1. The difference between UT1 and UTC is known as ...