A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Iwancio
Date: 2019 Nov 23, 01:59 -0800
In recent editions of Bowditch, tables 24 and 25 approximate the sun's motion near LAN as a parabola for solving ex-meridian sights. You might want to take a look at them and their explanation to get a feel for when you can get away with that kind of approximation.