From 8PM to 1PM (the next day) is 17 hours.
7 of them.
8pm to 7am is 11 hours.
2 hours
3 hours
6 hours
6am to 6pm is 12 hours. 6pm to 8pm is 2 hours. 12+2=14 6am to 8pm is 14 hours
5
2 hours
2 hours total.
9-1 = 8 hours
Four hours and thirty minutes.