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
| 9AM to 8AM | 3AM to 6PM | 5AM to 11PM |
| 9AM to 10PM | 11PM to 4PM | 6PM to 3PM |
| 11PM to 7AM | 12AM to 3AM | 5AM to 3PM |
| 12PM to 6PM | 6AM to 8PM | 7PM to 1AM |
| 12PM to 4PM | 7PM to 8AM | 2AM to 11AM |
| 5AM to 10PM | 3PM to 5PM | 6PM to 2PM |
