If the 2 AM is the very next day, then the duration is 17 hours.
seventeen 9 - 2 = 7 24 - 7 = 17 = 3 + 12 + 2
5 hrs afrter 9am is 2pm; 5 hrs afrter 9pm is 2am
12 hours.
21
From 9am to 6:30pm is 9 hours and 30 minutes.
Nine hours.
10 hours
5 Hours
6 hours
9 hours
21 hours
There are zero hours between 9 am and 9 am.