There are total 13 hours or 780 minutes from 9pm to 10am. In words, this duration is equal to thirteen hours or seven hundred eighty minutes.
How many hours from
| 7AM to 12PM | 10PM to 9PM | 10AM to 7AM |
| 11AM to 12PM | 2AM to 4AM | 2AM to 11PM |
| 1PM to 1AM | 6PM to 5PM | 8PM to 8AM |
| 5PM to 3PM | 2PM to 4PM | 4AM to 8AM |
| 12AM to 5AM | 8AM to 8PM | 8AM to 9PM |
| 2AM to 3AM | 5AM to 1AM | 12AM to 4PM |
