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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)
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Telescopes used with Meridian Marks
 
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LocationEngland
Cambridgeshire
Somersham
High Street (opposite No.91)
Distance (N) from Greenwich
OS map detailsOS Explorer: 225
OS grid refTL 36119.77922
(536119,277922)
WGS84 lat/long52.382422, -0.001515
TypePavement (slab)
Marking date1984
AccessUnrestricted
Greenwich Meridian Marker; England; Cambridgeshire; Somersham
North
North
All
South
South
Currently viewing images from 25 Sep 2011
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25 Sep 2011
05 Jul 2008
02 Jun 2007
22 May 2005
20 Feb 2005

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