English Dictionary

Definition of “Greenwich Mean Time”

Greenwich Mean Time or Greenwich Time

Definitions

noun

  1. mean solar time on the 0° meridian passing through Greenwich, England, measured from midnight: formerly a standard time in Britain and a basis for calculating times throughout most of the world, it has been replaced by an atomic timescale GMT See universal time
The name Greenwich mean time is ambiguous, having been measured from mean midday in astronomy up to 1925, and is not used for scientific purposes. It is generally and incorrectly used in the sense of universal coordinated time, an atomic timescale available since 1972 from broadcast signals, in addition to the earliest sense of universal time, adopted internationally in 1928 as the name for GMT measured from midnight

Example Sentences Including 'Greenwich Mean Time'

Butch Dingle is now three hours behind Greenwich Mean Time.
Sun, News of the World (1999)
Each region was given its own clock generator, which works to Greenwich Mean Time , and moves the time by an hour when BST starts.
New Scientist (1999)
It is also the new millennium's official Greenwich Mean Time starting point.
Independent (1998)
When GPS week 1024 begins at midnight Greenwich Mean Time on August 21, the count will return to week zero.
Misc (1999)
{ Time Difference }: 1 hr ahead of Greenwich Mean Time.
Delaforce, Patrick Collins Traveller-Tuscany and Florence

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