How long is Jupiter's day?
Jupiter is the largest planet. it spins very fast. how long is it's day?
A day in Jupiter is 9 hours 55 minutes. It is the 5th planet and the fastest rotating body in the Solar System with about 62 moons that have been identified. This planet is named after the king of the Roman gods.
The length of Jupiter's day is 9 hours and 55 minutes. Of course the Earth is considered 24 hours so Jupiter's day is much shorter. That would make for a short workday.