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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Lars Bergman
Date: 2025 Mar 31, 13:46 -0700
Bill Lionheart had a feeling it should be possible to infer the position from UT.
Measuring on the photo you can estimate the (topocentric) altitude difference between sun and moon; also you can estimate the difference in azimuths, this however depends on the altitudes which are unknown. A prerequisite is of course that you assume zenith is "up" in the picture. Using a quite simple excel sheet I got the following values of position versus UT, by trial and error. The first and last positions are outside France.
UT Latiude Longitude
10h50m 41°10' N 1°25' W
11h00m 43°30' N 1°38' E
11h10m 45°45' N 4°10' E
11h20m 48°15' N 6°20' E
11h30m 51°10' N 8°03' E
Lars