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