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