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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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Meridian Day (1984)
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LocationEngland
Cambridgeshire
Needingworth & Holywell
E side of: Ouse Valley Way (footpath)
Distance (N) from Greenwich
OS map detailsOS Explorer: 225
OS grid refTL 36293.71884
(536293,271884)
WGS84 lat/long52.328129, -0.001409
TypeMarker 'stone'
Marking date2000
AccessUnrestricted