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