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