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