There are total 11 hours or 660 minutes from 9am to 8pm. In words, this duration is equal to eleven hours or six hundred sixty minutes.
How many hours from
| 8PM to 12PM | 2AM to 1AM | 12AM to 3AM |
| 5AM to 11PM | 8AM to 1AM | 2PM to 5PM |
| 10AM to 11PM | 11PM to 5PM | 10AM to 2PM |
| 11PM to 2AM | 1AM to 10AM | 5AM to 6PM |
| 3PM to 11AM | 2AM to 8PM | 9PM to 3PM |
| 11PM to 10PM | 5AM to 12AM | 11AM to 8AM |
