There are total 1 hours or 60 minutes from 8pm to 9pm. In words, this duration is equal to one hours or sixty minutes.
How many hours from
| 10PM to 8AM | 6PM to 1PM | 11AM to 2PM |
| 4AM to 6AM | 10AM to 6PM | 6AM to 2AM |
| 7PM to 2PM | 2AM to 1PM | 5AM to 1PM |
| 10PM to 6PM | 12PM to 1AM | 2PM to 5PM |
| 10AM to 12AM | 11AM to 5PM | 5PM to 12PM |
| 11AM to 10PM | 2PM to 2AM | 5AM to 2PM |
