There are 12 hours as am and 12 hours as pm. This in total makes 24 hours a day. for 24 hour time, from 12 midnight to 12 noon it is am. Then pm hours start from 12 noon to just before 12 midnight. The change from am to pm is in one moment.
12 Hours ! There are 12 hours in the AM and 12 hours in the PM !
12 hours
12 hours
From midnight (am) to Noon (pm) is 12 hours.
2.5 hours
10 - 3 = 7 hours.
2 hours.
7 and a half hours
6 hours.
21 hours
2 hours
3 hours