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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)
The Millennium
Millennium Tree Line (MTL)
Meridian Laser
Astronomers Royal
Telescopes used with Meridian Marks
 
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LocationEngland
LB Waltham Forest
Chingford (E4)
Pretoria Crescent (outside No.47)
Distance (N) from Greenwich
OS map detailsOS Explorer: 174
OS grid refTQ 38416.94139
(538416,194139)
WGS84 lat/long51.629046, -0.001610
TypePavement (compass rose)
Marking date1999
AccessUnrestricted