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