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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)
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LocationEngland
Hertfordshire
Stanstead St Margarets
E side of: Amwell Lane (at junction with Durham Close)
Distance (N) from Greenwich
OS map detailsOS Explorer: 174
OS grid refTL 37925.11992
(537925,211992)
WGS84 lat/long51.789588, -0.001641
TypeTree | MTL?
Marking date2000?
AccessUnrestricted. Tree no longer present