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