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