Tuesday, August 30, 2011

What is Greenwich Time

Greenwich, England has been the home of Greenwich Mean Time (GMT) since 1884. The place that sets Time (Greenwich Mean Time) and Place (Greenwich Meridian).  It is truly unique. It is the birthplace of Henry VIII and his famous daughters Queen Mary & Queen Elizabeth I. . Each Spring it sees the start of the London Marathon. 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.GMT is sometimes called Greenwich Meridian Time because it is measured from the Greenwich Meridian Line at the Royal Observatory in Greenwich.  Greenwich is the place from where all time zones are measured. Greenwich England is where East meets West at the Greenwich Meridian (0° Longitude). Greenwich lies on the River Thames, a
few minutes by rail or tube, or a short river cruise from central LondonThere is the famous Cutty Sark to visit and the Royal Naval College.  Just down river is the Thames Barrier which is close to London City Airport. Greenwich Mean Time (GMT) is also known as Zulu Time
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Greenwich Mean Time is international time, the basis of the world time clock.  GMT marks precision time and military time (sometimes called Zulu Time). Defines date and time and the exact time.  The atomic time clock is adjusted by leap seconds to maintain synchronicity with GMT.

The Greenwich Meridian (Prime Meridian or Longitude Zero degrees) marks the starting point of every time zone in the World.  GMT is Greenwich Mean (or Meridian) Time is the mean (average) time that the earth takes to rotate from noon-to-noon.

GMT is World Time and the basis of every world time zone which sets the time of day and is at the centre of the time zone map.  GMT sets current time or official time around the globe.  Most time changes are measured by GMT.  Although GMT has been replaced by atomic time (UTC) it is still widely regarded as the correct time for every international time zone.

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