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