How long is a year on Neptune?
One year on Neptune is 164.8 Earth years, or 60,182 Earth days.
One day on Neptune is just over 16 hours long. There are 89,666 Neptunian days in a Neptunian year.
Note: A year is the time it takes a planet to orbit the Sun. More distant objects orbit more slowly, so they have a longer year.
See also: