There are 17 hours between 9pm and 2pm the following day.
(24 + 24 + 24 + 12 + 5) hours = 89 hours
there are 14 hours in the night in Uranus
about 10 hours
At least eight hours sleep is healthy enough but between 8 and 11 hours are good aswell
Koalas are awake for between four and eight hours a day. They are more active at night.
24 hours.
There are 4.9625 hours in one night on Jupiter.
In between 8 in the morning until 6 at night, there is a roughly a set of 10 hours in between them. Depending on whether it's daylight savings time or not, it can usually get darker outside at 6 at night.
8 to 10 hours
4 hours
It's recommended that adults get between 7 and 9 hours of sleep each night.