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Royal Observatory Greenwich
Latitude and Longitude
Airy Transit Circle (ATC)
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The Greenwich Meridian before the ATC
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LocationEngland
Essex
Waltham Abbey
Gunpowder Park
Distance (N) from Greenwich
OS map detailsOS Explorer: 174
OS grid refTQ 38285.99178
(538285,199178)
WGS84 lat/long51.674357, -0.001511
TypeSign on post(s)
Marking date2004
AccessUnrestricted