Like Earth, Neptune spins around its axis from west to east. However, a day on Neptune is shorter than an Earth day. Neptune completes one rotation in 16 hours, 7 minutes. The equator rotates at a speed of about 6,000 miles per hour (9,600 kph). This is slower than any of the other gas giants. It is still fast enough to cause the planet to bulge slightly at the equator. However, Neptune has the smallest equatorial bulge of the four gas giants.
Neptune's axial tilt is 29.6¬°. This is slightly more than Earth's axial tilt. This may mean that Neptune has seasons. However, the planet is so far from the Sun that it receives very little heat. So, changes in seasonal temperature are probably very small, or non-existent.
