There are total 10 hours or 600 minutes from 11am to 9pm. In words, this duration is equal to ten hours or six hundred minutes.
How many hours from
| 6AM to 1AM | 9AM to 8PM | 1PM to 6PM |
| 8PM to 8AM | 8AM to 12AM | 5AM to 8AM |
| 11AM to 7PM | 3PM to 2PM | 1AM to 3PM |
| 10PM to 11AM | 1PM to 2PM | 5PM to 7PM |
| 9PM to 10AM | 12PM to 5AM | 7PM to 10AM |
| 7AM to 1PM | 10PM to 7AM | 8PM to 2PM |
