There are total 12 hours or 720 minutes from 8am to 8pm. In words, this duration is equal to twelve hours or seven hundred twenty minutes.
How many hours from
| 3AM to 4AM | 3PM to 7AM | 8AM to 6PM |
| 7PM to 5AM | 5AM to 7PM | 4AM to 2AM |
| 9PM to 6PM | 3AM to 6AM | 5AM to 10PM |
| 4PM to 5PM | 12PM to 10AM | 7AM to 6PM |
| 4PM to 1AM | 4PM to 10PM | 10AM to 8AM |
| 1AM to 5AM | 1PM to 1AM | 5AM to 7AM |
