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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
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International Meridian Conference (1884)
Meridian Day (1984)
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Telescopes used with Meridian Marks
 
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LocationEngland
Essex
Waltham Abbey
S side of: Sun Street (outside No.15)
Distance (N) from Greenwich
OS map detailsOS Explorer: 174
OS grid refTL 38248.00560
(538248,200560)
WGS84 lat/long51.686785, -0.001499
TypePavement (slab)
Marking dateMay 1983
AccessUnrestricted. Mark no longer present