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