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