How often does the earths rotate on its axis?

Answer 1

"How often" isn't a good way of putting it, as the Earth turns all the time. It makes one full turn in about 24 hours.

The earth rotates on its axis every 24 hours.

This rotation has a special name--we call it a "day."

The earth rotates it axis once in a day. When it spins on its axis, the side facing the sun is daytime, and the opposite is nighttime.

23 hours and 56 minutes

One earth rotation is one day, therefore it rotates every 24 hours on its axis relative to the Sun.

It actually rotates slightly faster than that with respect to the distant stars... around 23 hours and 54 minutes.

Every hour