The Moon completes one orbit around the Earth about every 27.3 days (a sidereal month), and its average orbital speed is about 1.02 km/s (roughly 3,683 km/h or 2,288 mph). The speed varies slightly along its elliptical path, being faster at perigee and slower at apogee, but the commonly cited average is about 1.02 km/s. Earth’s simultaneous orbit around the Sun means the Moon takes about 29.5 days to return to the same phase relative to the Sun (a synodic month), but the orbital period around Earth remains ~27.3 days in the sidereal frame. [generated_information]
