What is GMT?


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USA, Canada clocks on Daylight Saving Time until Sunday 2 November 2014 at 2am local time
Europe: Clocks on Summer Time until Sunday 26 October 2014 at 01:00 (1am) GMT
UK Clocks on British Summer Time (BST) until Sunday 26 October 2014 at 01:00 (1am) GMT


Greenwich Mean Time

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GMT

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  Although GMT has been replaced by atomic time (UTC) it is still widely regarded as the correct time for every international time zone.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

Greenwich Mean Time in Space

STS-114 Picture of International Space Station (NASA)

Greenwich Mean Time (GMT) is the time used on the International Space Station

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

News:

Philippines Typhoon

UNICEF: Your donation today could help us give life-saving support to a child affected by Typhoon Haiyan, or provide support in their community during the aftermath.

 Click here to donate


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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)

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

Time in USA Cities

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Phoenix Time | San Antonio Time | San Diego Time | Dallas Time | San Jose Time
Jacksonville Time | Indianapolis Time | San Francisco Time | Austin Time | Columbus Time
Fort Worth Time | Charlotte Time | Detroit Time | El Paso Time | Memphis Time
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Greenwich Mean Time (GMT)

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Greenwich Mean Time (GMT)

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Last revised: April 09, 2014 14:57 +0100 GMT  Worldwide Photographs Network  Site Map 

What is GMT?