GMT - définition. Qu'est-ce que GMT
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Qu'est-ce (qui) est GMT - définition

TIME STANDARD
GMT; Greenwich mean time; Greenwich Standard Time; Grenwich Mean Time; Greenwich mean Time; GMT Time; Gmt; Greenwich Mean time; British Mean Time; London Mean Time; Coordinated Greenwich Mean Time; GreenwichMeanTime.com; Greenwichmeantime.com; Grenwhich Mean Time; Morocco Standard Time; GMT Standard Time; GMT Daylight Time
  • Clock in [[Kumasi]], [[Ghana]], set to GMT.

GMT         
GMT         
Greenwich Mean Time [Additional explanations: +0000] (Reference: TZ, UTC, UK)
GMT         
GMT is the standard time in Great Britain which is used to calculate the time in the rest of the world. GMT is an abbreviation for 'Greenwich Mean Time'.
New Mexico is seven hours behind GMT.

Wikipédia

Greenwich Mean Time


Greenwich Mean Time (GMT) is the mean solar 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; as a consequence, it cannot be used to specify a particular time unless a context is given. The term 'GMT' is also used as one of the names for the time zone UTC+00:00 and, in UK law, is the basis for civil time in the United Kingdom.

English speakers often use GMT as a synonym for Coordinated Universal Time (UTC). For navigation, it is considered equivalent to UT1 (the modern form of mean solar time at 0° longitude); but this meaning can differ from UTC by up to 0.9 s. The term GMT should thus not be used for purposes that require precision.

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 and reaches its highest point in the sky there. This event may occur up to 16 minutes before or after noon GMT, a discrepancy described by the equation of time. Noon GMT is the annual average (the arithmetic mean) moment of this event, which accounts for the word "mean" in "Greenwich Mean Time".

Originally, astronomers considered a GMT day to start at noon, while for almost everyone else it started at midnight. To avoid confusion, the name Universal Time was introduced to denote GMT as counted from midnight. Today, Universal Time usually refers to UTC or UT1.

The term "GMT" is especially used by United Kingdom bodies, such as the BBC World Service, the Royal Navy, and the Met Office; and others particularly in Arab countries, such as the Middle East Broadcasting Centre and OSN.

Exemples du corpus de texte pour GMT
1. HARDtalk is broadcast on BBC World News at 03:30 GMT, 08:30 GMT, 14:30 GMT, 20:30 GMT and 22:30 GMT.
2. Punch–up Polling stations will be open from 1200 GMT until 2000 GMT on Friday and from 0600 GMT until 1200 GMT on Saturday.
3. Most items carried during TV and radio bulletins at 1500 gmt and 1600 gmt were on the burial ceremony and the same was repeated on 7 August during the 0400 gmt and 0700 gmt TV bulletins.
4. If a Thursday landing is canceled, Friday offers four attempts at the Kennedy Space Center, at 1816 GMT and 1'51 GMT, or at Edwards Air Force Base in California, at 2121 GMT and 2256 GMT, NASA said.
5. The shuttle could land at Kennedy on Friday at 1816 GMT or 1'52 GMT.