There are total 10 hours or 600 minutes from 9pm to 7am. In words, this duration is equal to ten hours or six hundred minutes.
How many hours from
| 8AM to 6AM | 6PM to 10PM | 9PM to 7PM |
| 8AM to 6PM | 11PM to 11AM | 6AM to 8PM |
| 7PM to 3PM | 5PM to 9PM | 5PM to 2PM |
| 5AM to 8PM | 12AM to 10AM | 1PM to 7PM |
| 9PM to 4PM | 4PM to 10AM | 10PM to 5PM |
| 4PM to 1PM | 1AM to 6PM | 12PM to 4PM |
