There are 21.5 + 24k hours, where k is an integer.
8 hours.
8.5 hours
3 hours.
15 hours.
This would be 6.5 hours.
3am to 2pm is 11 hours.
3am to 2pm is 11 hours.
There are 7 hours between 7 am to 2pm
6 and 1/2
5-1/2
There are 17 hours between 9pm and 2pm the following day.
5 Hours