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