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