There are total 2 hours or 120 minutes from 9pm to 11pm. In words, this duration is equal to two hours or one hundred twenty minutes.
How many hours from
| 12PM to 12AM | 10PM to 10AM | 8PM to 6PM |
| 8PM to 7PM | 6AM to 11AM | 10PM to 5AM |
| 12AM to 6PM | 11AM to 8AM | 9AM to 8AM |
| 5AM to 7AM | 3AM to 8PM | 10AM to 3AM |
| 1AM to 6AM | 1AM to 8PM | 10AM to 2PM |
| 11PM to 9PM | 5AM to 10AM | 9PM to 5PM |
