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