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