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