A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Ed Popko
Date: 2019 Feb 8, 04:55 -0800
What a nice device to see the association of latitude, projection of reference marks, and hour angles.
You could also show that the same priniciples - latitude, Equation of Time, etc - are at work for a sundial on Mars though designs would have to adjust for the plane's r 'daily' 360° rotation and time of revolution about the sun.