It Goes round once and that takes an hour
jupiter because its fast
1564
Jupiter is the fastest rotating planet.
Mercury because of its fast orbit.
Mars
Mars
2100km
Mercury is the fastest.
All of them.
Jupiter
Mercury .
The rotational period, or how fast a planet spins on its axis, determines the length of a day on that planet. A faster spin results in shorter days, while a slower spin leads to longer days.