There are total 1 hours or 60 minutes from 9pm to 10pm. In words, this duration is equal to one hours or sixty minutes.
How many hours from
| 5PM to 8AM | 6AM to 9PM | 3PM to 12AM |
| 3PM to 9AM | 3PM to 5PM | 3AM to 7AM |
| 2PM to 5PM | 6PM to 10AM | 8PM to 7PM |
| 10PM to 3PM | 12AM to 1AM | 6AM to 7AM |
| 6AM to 8PM | 8PM to 3PM | 9AM to 1PM |
| 9PM to 1PM | 1PM to 11AM | 1PM to 9AM |
