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