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