3 hours between 12pm and 3pm
21
5 hours + 12 hours is 17 hours
12pm to 7pm is a span of 7 hours.
From 12am to 8am is a total of 8 hours. This is because there are 8 hours between the two times, counting inclusively. To calculate this, you can subtract 12 (midnight) from 8 (8am) which equals 8 hours.
3 hours between 12pm and 3pm
21
5 hours + 12 hours is 17 hours
12pm to 7pm is a span of 7 hours.
18 hours
17
4
7
6 hours.
20
2
4hours