On average about 12 hours, but it can be anywhere from 0 to 24 hours, depending on your latitude and the time of the year.
A night on Callisto is 8.35 days since a full day (including night) is 16.7 Earth days long.
999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999 Earth days
About 12 hours if you don't count the night.
The length of day and night on Earth varies depending on the time of year and the observer's location. At the equator, day and night are each about 12 hours long. As you move towards the poles, the length of daylight and darkness can change significantly, with areas near the poles experiencing periods of 24-hour daylight or darkness.
1 time from night to day it 1 time
Night on Earth was created in 1991.
A Night on Earth was created in 2005.
the night turns to day and day turns to night ============================== If you want to back away and take the long view ... EVERYTHING happens as the Earth rotates on its axis.
Night here on Earth happens when the Earth is in its own shadow.
The duration of Night on Earth is 2.15 hours.
One year.
Because they are a VERY long way away.