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
| 9PM to 10PM | 8PM to 8AM | 7AM to 11PM |
| 1PM to 7PM | 11AM to 6AM | 8AM to 5PM |
| 1AM to 1PM | 8AM to 10PM | 8PM to 11PM |
| 3AM to 4AM | 9AM to 6AM | 1PM to 7AM |
| 11PM to 3PM | 11AM to 4PM | 3AM to 3PM |
| 7PM to 11PM | 9AM to 5AM | 4PM to 6PM |
