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