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