|Definition||:||Greenwich Mean Time|
|Category||:||Regional Time Zones|
What does GMT mean?
Greenwich Mean Time (GMT) is a term originally referring to mean solar time at the Royal Observatory in Greenwich, London. Greenwich Mean Time (GMT) was established in 1884 at the International Meridian Conference, when it was decided to the place the Prime Meridian at Greenwich, England.
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||GMT||Generic Mapping Tools|
||GMT||Giant Magellan Telescope|