It is the period of rotation of the earth on its own axis.
The rotation of the Earth on its axis causes day and night. As the Earth spins, different parts of it are exposed to sunlight or darkness, creating the cycle of day and night.
24 hours
one day on earth is 24 hours.
A day on Uranus is shorter than a day on Earth. Earth's day is roughly 24 hours long. A day on Uranus is 17 hours, 14 minutes long.
When the Earth first formed, a day was about 6 hours long.
24 hours
A day on Saturn is about 11 hours on Earth.
24 hours a day
About 12 hours if you don't count the night.
There are 1,408 hours in a day on Mercury. Mercury's slow rotation speed causes its days to be about 59 Earth days long.
The Earth rotates about its axis, causing the sun to rise and set. A full rotation happens every 23.934 hours. (Which is close to 24 hours, which is why a full day-night cycle is about 24 hours long.)
The Earth spinning. It spins 360 degrees in 24 hours.