Post #2208422

@olasd@mastodon.opportunis.me @OscarCunningham@mathstodon.xyz @johncarlosbaez@mathstodon.xyz if you are in the 1800s and can't afford fancy chronometers, you might measure the distance from the sun to the moon with your sextant to correct your inaccurate clock, but that's the only time I've done anything other than vertical height angles.