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