A day on Earth is 24 hours, a day on Mars is 24 hours 39 minutes and 35 seconds, a day on Mercury is 1,407 hours, a day on Venus is 5,832 hours, a day on Jupiter is 9 hours and 50 minutes, a day on Saturn is 10 hours and 47 minutes, a day on Uranus is 16 hours and 7 minutes, a day on Neptune is 16 hours, and a day on Pluto is 144 hours.
a day is 24 hours
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each day is 24 hours
24 hours a day
One day on Earth is approximately 24 hours long, based on one full rotation of the Earth on its axis.