8 hours
10
11 AM
8pm to 7am is 11 hours.
9
8 Hours 30 Mins
37 hours.
17 hours
7am to 4pm is 9 hours.
7am to 4:30am is 21 hours. 7am to 4:30pm is 9 hours.
Usually, that means 7 AM until 3 PM. 7am-3pm is first shift 3pm-11pm is second shift 11pm-7am is third shift
many hours is 7am-245pm is : 7 hr 45 min
7am to 2pm is 7 hour.