A minimum of just over 12 to a maximum of just under 36.
12 hours
12 hours
12 Hours ! There are 12 hours in the AM and 12 hours in the PM !
From midnight (am) to Noon (pm) is 12 hours.
2.5 hours
21 hours
2 hours
3 hours
7 and a half hours
2 hours.
6 hours.
10 - 3 = 7 hours.