Home
Interactive UK map
Interactive World map
Visit
 
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
 
Coordinate Systems
Useful Links
 
Search
LocationEngland
West Sussex
East Grinstead
East Court, College Lane
Distance (S) from Greenwich
OS map detailsOS Explorer: 135
OS grid refTQ 39929.38557
(539929,138557)
WGS84 lat/long51.129206, -0.001639
TypeGround (slab)
Marking date1977
AccessUnrestricted