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