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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
Western Road (A277) – outside No.101a
Distance (S) from Greenwich
OS map detailsOS Explorer: 122
OS grid refTQ 40718.10086
(540718,110086)
WGS84 lat/long50.873151, -0.001397
TypePavement (plate)
Marking date1975
AccessUnrestricted