12 hours
21
Between 10am and 9pm, there are 11 hours.
There are 17 hours between 9pm and 2pm the following day.
72 hours from Sunday at 12am would be Wednesday at 12am. This is because there are 24 hours in a day, so three days would be 72 hours. Starting at Sunday at 12am, you would count 24 hours for each day, bringing you to Wednesday at 12am.
Monday through Saturday: 10am-9pm Sunday: 12am-6pm
12am to 4pm is 16 hours.
24
24 hours
Depends where you live.
12 hours
12 hours.
4to 9pm is how much hours
18 hours
21
Between 10am and 9pm, there are 11 hours.
17