fifteen and a half
21:00 - 05:30 = 15:30
00:30 + 06:00 + 09:00 = 15:30
It 21 hours
11 hours and 45 minutes.
2.5 + 5.5 = 8.0eight hours
24 hours
12 hours.
4to 9pm is how much hours
Between 10am and 9pm, there are 11 hours.
There are 17 hours between 9pm and 2pm the following day.
7 hours
7 hours.
SIX hours !
7 hours.