What is GMT?

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 GMT | BST | London Time | USA: EST / CST / MST / PST  | EU: CET / EET / WETTime in other countries


Greenwich Mean Time

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GMT

Greenwich Mean Time (GMT)

Where is Greenwich?  What is Greenwich Time (GMT)?

Greenwich, England has been the home of Greenwich Mean Time (GMT) since 1884.  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.

Clocks Change: Spring Forward & Fall Back (Fall = Autumn)
BUT
 GMT remains the same all year around.


wpe12.jpg (64603 bytes)

Check out the GMT timestamp to see how accurate your computer time is.

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  Although GMT has been replaced by atomic time (UTC) it is still widely regarded as the correct time for every international time zone.

Where is Greenwich, England?

Longitude 0° 0' 0"

Latitude 51° 28' 38"N (North of the Equator)

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.

Want to send someone a timely reminder?
Why not send them a FREE eCard! PRESS HERE

Greenwich Mean Time (GMT) is also known as Zulu Time

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Daylight Saving Time
in USA & Canada:

Sunday 14 March 2010 -
Sunday 7 November 2010

Europe / UK clocks on
Summer Time / Daylight Saving Time:

Sunday 28 March 2010 01:00 GMT -
Sunday 30 October 2010

Time in

USA + Canada

Atlantic Time (Canada) | Eastern Time (EST) | Central Time (CST) | Mountain Time (MT) | Pacific Time (PST) | Alaska Time (AKST) | Hawaii Time (HST) | Daylight Saving Time (DST)

Europe

Central European Time (CET) | Eastern European Time (EET) | Western European Time (WET) | British Summer Time   (BST)

Asia / Pacific

China Time (CST) | India Time (IST) | Japan Time (JST)

Watches

Clocks & Watches | Popular Watches

Countries on GMT

Europe (Winter only)

UK | Ireland | Portugal

Africa

St Helena | Burkina Faso | Gambia | Ghana | Guinea | Guinea-Bissau | Ivory Coast | Liberia | Mali | Mauritania | Morocco | Sao Tome | Senegal | Togo | Western Sahara

 

GMT ] Next ]

[ What is GMT? ] GMT Time: Twitter ]

More Here ] Time #1 noun ] Time in European Cities ] Time in USA Cities ] Time in Canadian Cities ] Time in Major Markets ] World Time Zones Map ] Time zone conversion ] GMT timestamp ] Time Information ] World Time Zones Clock ] Google Search ] Newsletter ] Feedback Form ]

GreenwichMeanTime.com

Greenwich Mean Time (GMT)

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Last revised: February 02, 2010 13:11 -0000 GMT  Worldwide Photographs Network™  Site Map

What is GMT?