If Earth makes one complete rotation on its axis every 23 hours and 56 minutes, how does day and night not being flipped on our clocks after six months? (6monthx30dayx4min/60=12hour)

Question

And why leap year happens once per 4 years only to address this?

In: 1081

Answer 1

You answered your own question with your calculation. In 6 months the earth is on the other side of the Sun, so you need 180 degree difference for daytime to keep facing the sun at the same time.
The 56 minutes is for a full 360 degree spin on axis, but one day is not 360 degrees of spinning, it’s a little bit more given that the earth not only rotates it also translates within its orbit.