In astronomy, the Earth's orbit is the motion of the Earth around the Sun, from an average distance of 149.59787 million kilometers (93 million miles) away. A complete orbit of the Earth around the Sun occurs every 365.256363004 days (1 sidereal year).[nb 1] This motion gives an apparent movement of the Sun with respect to the stars at a rate of about 1°/day (or a Sun or Moon diameter every 12 hours) eastward, as seen from Earth. On average it takes 24 hours—a solar day—for Earth to complete a full rotation about its axis relative to the Sun so that the Sun returns to the meridian. The orbital speed of the Earth around the Sun averages about 30 km/s (108,000 km/h, or 67,108 mph), which is fast enough to cover the planet's diameter (about 12,700 km, or 7,900 miles) in seven minutes, and the distance to the Moon of 384,000 km (239,000 miles) in four hours
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