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The Moon's Orbit and Rotation. It takes the Moon 27.322 days to go around the Earth once. Because of this motion, the Moon appears to move about 13 against the stars each day, or about one-half degree per hour.
It takes 88 Earth days for Mercury to complete an orbit of the Sun, about 1/4 of an Earth year. The day on Mercury is unusual. The planet's spin is extremely slow, taking about 58.7 Earth days to make one rotation. This is exactly 1.5 turns for each orbit. The result of these two periods is that the solar day is greatly extended, and lasts about 176 Earth days (sunrise to sunrise).