A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding
From: Peter Hakel
Date: 2017 Oct 9, 12:49 -0700
Comparisons with the 2018 Nautical Almanac Commercial Edition show that the spreadsheets remain sufficiently accurate for the year 2018 without the need for any changes or updates. A screenshot of mars.xls is attached for illustration.