A year on Neptune takes 164.8 Earth years. A day on Neptune is 16 hours and 6.7 minutes.
Neptune has the wildest and strangest weather in the entire solar system. It has huge storms with extremely high winds. Its atmosphere has dark spots which come and go, and bright cirrus-like clouds which change rapidly.
Neptune has an average temperature of -353° Fahrenheit or -214° Celsius. On Earth sunlight drives our weather,but Neptune is so far away from the sun that it receives a thousand times less sunlight than Earth does. How Neptune gets the energy for such intense weather is still a mystery.
Neptune has a giant storm much like the storm on Jupiter. This storm is often called The Great Dark Spot.Neptune also has six rings which circle the planet.