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