There are total 12 hours or 720 minutes from 9pm to 9am. In words, this duration is equal to twelve hours or seven hundred twenty minutes.
How many hours from
| 8AM to 7AM | 12PM to 3PM | 5PM to 10AM |
| 5AM to 11PM | 12AM to 12PM | 4PM to 6AM |
| 10PM to 10AM | 5AM to 4AM | 12PM to 11PM |
| 8AM to 9AM | 4PM to 3PM | 1AM to 10PM |
| 2PM to 9AM | 12PM to 8AM | 11AM to 8PM |
| 1PM to 4AM | 4PM to 9PM | 8PM to 11AM |
