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