Our calculations have discovered the three 'norths' will combine for the first time in history this week🧭

True north, magnetic north and grid north will combine at a single point - starting at Langton Matravers, a village just west of Swanage #3Norths pic.twitter.com/suMMVfTEdT

— Ordnance Survey (@OrdnanceSurvey) November 2, 2022