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