NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Longitude by sunset challenge
From: Murray Buckman
Date: 2024 Sep 17, 12:29 -0700
From: Murray Buckman
Date: 2024 Sep 17, 12:29 -0700
Bowditch addresses this. See the chapter Time. But that is just about sunrise, sunset and the eqution of time.
I have tried something similar which influences the accuracy of the result. From time to time I have computed, to the second, sunrise as viewed from my home to a good horizon, and then measured how far out that was from actual - the difference being (assumed) the actual effect of refraction over the predicted effect of refraction. But then I know both my longitude and latitude in advance. Ofcourse, the time of sunrise and sunset varies by both.
