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