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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
East Sussex
Lewes
S side of: Meridian Road
Distance (S) from Greenwich
OS map detailsOS Explorer: 122
OS grid refTQ 40683.10798
(540683,110798)
WGS84 lat/long50.879559, -0.001620
TypeObelisk/Pillar
Marking date1938
AccessUnrestricted