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