Which planet has the shortest day ?

Time passed in the outer space is different from what one earth because Planets have different speed to revolve around the sun and also spin on its own axis. Earth had 24 hours in a day but there are surely many long or shorter days on other planets. That is why i am curious to know which planet had the shortest day in the solar system.
Time passed in the outer space is different from what one earth because Planets have different speed to revolve around the sun and also spin on its own axis. Earth had 24 hours in a day but there are surely many long or shorter days on other planets. That is why i am curious to know which planet had the shortest day in the solar system.