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