OS X (Eastings) 390587 OS Y (Northings) 163571 Nat Grid ST905635 / ST9058763571 Nearest Post Code SN12 7NP Lat (WGS84) N51:22:16 (51.37111778837401) Long (WGS84) W2:08:12 (-2.1366115025538392) Lat,Long (WGS84) 51.37111778837401,-2.1366115025538392 Lat (OSGB36) N51:22:14 (51.37062165154125) Long (OSGB36) W2:08:07 (-2.135239584513974) Lat,Long (OSGB36) 51.37062165154125,-2.135239584513974 what3words relies.twilight.switch Open Loc/Plus code 9C3V9VC7+C9R