The rotational surface speed at the equator is approximately 1000 mph
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Just over 700 mph
Just divide the distance by the speed. If the distance is in miles, and the speed in miles/hour, the time will be in hours - which you can then easily convert to days.
The answer depends on what needs to rotate. A second hand, hour hand, earth, sun, ballet dancer, spinning top? Who knows?
141.672 miles an hour
55 kilometers an hour=34.1754156 miles per hour