c47

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valdesvj / almanac47

Celestial navigation for the SwissMicros C47/R47 calculator (RPN): almanac, sight reduction and horizon charts drawn on the calculator screen. Includes a pixel-identical PC version in Python and the base for the Almanac 47 phone app. Does not replace the Nautical Almanac.

calculator rpn celestial-navigation c43 swissmicros nautical-almanac c47 sightreduction

Updated Sep 30, 2026
Python

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