A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Peter Fogg
Date: 2010 Nov 23, 08:55 +1100
I recently stood astride the Prime Meridian at Greenwich and fired up my Garmin Nuvi GPS. The coordinates read N 51 28.674' W 000 00.088'. Why the error? Is this due to nutation wobble? If so, when would it read exactly zero? How far off is this in nautical miles? It would appear to be far too minimal to consider for celestial nav work with a sextant, but is this a consideration? thanks very much.