The twin planets
1. Uranus and Neptune are similar in size, rotation time and temperature.
Sometimes they are called twin planets. Uranus is about 1,786,400,000 miles from the sun. Neptune is about 2,798,800,000 miles from the sun.
2. Neptune can complete a rotation in 18 to 20 hours. Uranus can make one in 16 to 18 hours.