The celestial sphere, the coordinates system, seasons ...

The Earth has to travel an additional angle to have the Sun at the same position each day. 1 orbit = 1 full circle = 360 degrees Earth takes 1 year = 365 days to complete 1 orbit. additional angle Earth has to rotate: 360 degrees/365 days = 0.986 degrees/day How long does it take the Earth to cover ~ 1 degree? ................
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