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