It has to do with the immense gravity of the planet causing it to force itself around itself. It is also a gas giant, and gases move faster than other states.
Jupiter has the shortest "day" of any planet in the solar system.
A day on Jupiter, which is the time it takes for the planet to complete one rotation on its axis, is approximately 10 hours. This rapid rotation makes Jupiter the planet with the shortest day in our solar system. However, due to its massive size and thick atmosphere, the planet's rotation can vary slightly at different latitudes.
Planets have different day lengths due to variations in their rotation speeds and sizes. Planets closer to the Sun, like Mercury, have shorter day lengths because they rotate faster. Larger planets, such as Jupiter, have longer day lengths due to their slower rotation speeds.
Jupiter: 9 hr, 55.55 min. Saturn: 10 hr, 32.6 min. Neptune: 16 hr, 6.6 min. Uranus: 17 hr, 14.4 min. Earth: 24 hr. Mars: 24 hr, 39.6 min. Venus: About 116.75 Earth days. Mercury: About 176 Earth days. These numbers are for the "solar day". If you use the "sidereal day" for your definition of "day" then Venus has a longer day than Mercury.
Jupiter
The planets with the shortest days are Jupiter (9 hours and 55 minutes) and Saturn (10 hours and 30 minutes.)
Jupiter - it has the shortest day and the fastest roational speed
Of the four inner planets (Mercury, Venus, Earth, and Mars), Earth has the shortest day at 23 hours and 56 minutes sidereal rotation period. That's the "sidereal day". The day that lasts exactly 24 hours is called the "solar day". For both "days", Earth has the shortest day.
Jupiter has the shortest day among the planets in our solar system, with a day lasting approximately 9.9 hours.
Jupiter has the shortest day among the planets because it has the fastest rotation on its axis, completing one rotation in about 10 hours. This rapid rotation speed is a result of Jupiter's large size and mass, which causes faster spinning due to conservation of angular momentum.
Saturn's year lasts 29.5 Earth years, however Saturn's day lasts only 10.6 Earth Hours. That is less than half of one Earth day.
Jupiter has the shortest "day" of any planet in the solar system.
The shortest planetary "day" (period of rotation) is that of the largest planet, Jupiter.With an equatorial rotation speed of over 12.6 km/sec (28,000 mph), Jupiter spins once on its axis every 9.925 Earth hours. (about 9 hours, 55 1/2 minutes)
Jupiter would celebrate the most birthdays since it has the shortest day length of all the planets in our solar system, completing a rotation on its axis in just under 10 hours.
Jupiter in the planet with the shortest rotation time, with a day approximately 12 hours long.
The length of each planet's days are different because they rotate at different speeds. A day on Mercury is equal to 58.5 days on Earth. A day on Mars takes 24 hours and 39 minutes on Earth. A day on Venus is 243 Earth days and a day on Jupiter is equal to 9.9 Earth hours.
Jupiter has the shortest rotational (spin) period, about 9 hours, 55 minutes, 30 seconds.