12am to 4pm is 16 hours.
6 hours from 4pm to 10pm
7am to 4pm is 9 hours.
4pm to midnight is 8 hours.
Eight 7:30 + 0:30 = 8:00 4pm = 16:00 hours 16 - 8 = 8
730 days = 17,520 hours
10am to 4pm is a period of six hours.
7 hours
19 hours
Two hours
Hours are between 4pm and 9pm is 5 hours, 9 pm -4 pm
7