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Royal Observatory Greenwich
Latitude and Longitude
Airy Transit Circle (ATC)
WGS84 and the Greenwich Meridian
The Greenwich Meridian before the ATC
The Quest for Longitude
International Meridian Conference (1884)
Meridian Day (1984)
The Millennium
Millennium Tree Line (MTL)
Meridian Laser
Astronomers Royal
Telescopes used with Meridian Marks
 
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LocationEngland
LB Greenwich
Greenwich (SE10)
Royal Observatory (south side of Meridian Building, on Bradley Meridian)
Distance (S) from Greenwich
OS map detailsOS Explorer: 162 or 162
OS grid refTQ 38877.77320
(538877,177320)
WGS84 lat/long51.477799, -0.001590
TypePlaque (wall) | Wall (line)
Marking datec. 1967
AccessRestricted (charged entry)

Images currently in preparation

North
North
All
South
South

The metal strip on the wall was removed c.2008.

Royal Observatory visitor attraction (part of the National Maritime Museum)