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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 Tower Hamlets
Poplar (E14)
Clove Crescent
Distance (N) from Greenwich
OS map detailsOS Explorer: 162
OS grid refTQ 38622.80866
(538622,180866)
WGS84 lat/long51.509726, -0.003868
TypeSculpture
Marking date1992
AccessNormally unrestricted (land not in public ownership). Mark no longer present