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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)
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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 20 Feb 2005
Click to choose image set
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.