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