There are total 11 hours or 660 minutes from 9pm to 8am. In words, this duration is equal to eleven hours or six hundred sixty minutes.
How many hours from
| 10PM to 9AM | 8AM to 9PM | 10PM to 5AM |
| 6PM to 5AM | 6PM to 12AM | 10AM to 4PM |
| 2AM to 12AM | 1PM to 2PM | 5PM to 8AM |
| 9PM to 11AM | 8AM to 2AM | 4PM to 10AM |
| 8AM to 10PM | 7AM to 12PM | 10AM to 2PM |
| 8PM to 7AM | 6PM to 3AM | 1AM to 4AM |
