They are 7am-4pm Mon-Fri but they CAN ask you to stay longer hours or work weekends.
12am to 4pm is 16 hours.
6 hours from 4pm to 10pm
7am to 4:30am is 21 hours. 7am to 4:30pm is 9 hours.
It is 12 hours from 4pm to 4am.
8pm to 7am is 11 hours.
4pm to midnight is 8 hours.
7am to 2pm is 7 hour.
many hours is 7am-245pm is : 7 hr 45 min
10am to 4pm is a period of six hours.