A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Herman Dekker
Date: 2021 Mar 11, 02:03 -0800
By coincidence I came on the websiie of Mike Harris who has written diverse Computer Navigation Programs.
I know from the past (15 years ago or so) you had to pay for the programs.
Now they are free download the required activation code is supplied.
The programs have the old school DOS outlook but who is interested can take a look.