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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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Astronomers Royal
Telescopes used with Meridian Marks
 
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LocationEngland
Cambridgeshire
Somersham
High Street (outside No.91)
Distance (N) from Greenwich
OS map detailsOS Explorer: 225
OS grid refTL 36119.77936
(536119,277936)
WGS84 lat/long52.382547, -0.001509
TypePavement (slab)
Marking date1984
AccessUnrestricted
Greenwich Meridian Marker; England; Cambridgeshire; Somersham
North
North
All
South
South
Currently viewing images from 05 Jul 2008
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25 Sep 2011
05 Jul 2008
02 Jun 2007
20 Feb 2005
1950s

An identical Mark is located on the opposite side of the road.