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