Why is 24h (angle) equivalent to 360°? The earth does not spin 360° in 24h.
When giving astronomical coordinates, my GCSE study guide says right ascension is measured in hours where 24h right ascension = 360°. It also says that 360° of rotation is a sidereal day - 24h 56minutes. So 360° in the celestial sphere of right ascension should be 23h 56minutes, not 24h. I assumed that this was a method to correct for the rotation of Earth (and therefore the apparent coordinates of the stars). Are they separate systems? Or is this GCSE cutting corners? Could somebody please explain this to me.