There are total 11 hours or 660 minutes from 10am to 9pm. In words, this duration is equal to eleven hours or six hundred sixty minutes.
How many hours from
| 2PM to 9AM | 7AM to 9PM | 1PM to 5AM |
| 3AM to 1PM | 8PM to 6PM | 5AM to 12AM |
| 11PM to 8PM | 8PM to 3PM | 6AM to 9PM |
| 8PM to 8AM | 7PM to 8AM | 10AM to 9PM |
| 8AM to 7PM | 9AM to 1PM | 8PM to 11AM |
| 9AM to 5AM | 3PM to 1AM | 1PM to 12AM |
