A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Brian Walton
Date: 2019 Jun 29, 23:15 -0700
“Assume a star at 17°S”. A star with a declination of 17°S ?
A star with a declination of 17°S will rise on an azimuth of 090+17=107° anywhere within Lat 20N to 20S, and set on an azimuth of 270-17=253° anywhere from 20N to 20S. I am just using the rules as a sailor would. It has nothing to do with seasons, or the Sun.
That star will also go over all places with a latitude of 17°S, every day. and if it is dark, and it goes overhead, you are on Lat 17°S. It has nothing to do with seasons, or the Sun.