At the equator, it is turning at a little more than 1000 miles per hour. There are 24 time zones, and the equator is about 25,000 miles in length. So each time zone is a little more than 1000 miles wide at the equator.
The earth rotates on its axis once each day. Since the circumference of the earth at the equator is 24,901.55 miles, a spot on the equator rotates at approximately 1037.5646 miles per hour (1037.5646...