A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Paul Hughes
Date: 2018 Apr 4, 02:34 -0700
We define time as the length of the year 1900, and its resultant second. Using Sun as your origin requires your translation of that defined Earth based time to one of your origin's. See Seidelmann's Explanatory Supplement to the Astronomical Almanac.