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What (who) is Greenwich Time - definition
Greenwich Time Signal
SERIES OF SIX SHORT TONES BROADCAST AT ONE-SECOND INTERVALS BY MANY BBC RADIO STATIONS
BBC Pips; BBC pips; Greenwich time signal; Greenwich Pips; Crashing the pips; Greenwich time pips
The Greenwich Time Signal (GTS), popularly known as the pips, is a series of six short tones (or "pips") broadcast at one-second intervals by many BBC Radio stations. The pips were introduced in 1924 and have been generated by the BBC since 1990 to mark the precise start of each hour.
Greenwich Mean Time
![Clock in [[Kumasi]], [[Ghana]], set to GMT.](https://commons.wikimedia.org/wiki/Special:FilePath/Donald Stewart's Monument- Kumasi.jpg?width=200 "Clock in [[Kumasi]], [[Ghana]], set to GMT.")
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
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.
Greenwich Mean Time
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
<time, standard> (GMT) The local time on the Greenwich
meridian, based on the hypothetical mean sun (which averages
out the effects of the Earth's elliptical orbit and its tilted
axis). GMT is the basis of the civil time for the UK.
In 1925 the reference point was changed from noon to midnight
and it was recommended that the term "Universal Time" should
be used for the new GMT.
Authorities disagreed on whether GMT equates with UT0 or
UT1, however the differences between the two are of the
order of thousandths of a second. GMT is no longer used for
scientific purposes.
(2001-08-02)
Examples of use of Greenwich Time
1. These will be introduced instead by the pips from the Greenwich time signal.