There are total 11 hours or 660 minutes from 10pm to 9am. In words, this duration is equal to eleven hours or six hundred sixty minutes.
How many hours from
| 12PM to 1PM | 10PM to 4PM | 11PM to 3PM |
| 7PM to 8PM | 1PM to 9PM | 4AM to 5PM |
| 1AM to 9AM | 2PM to 11AM | 12PM to 4PM |
| 3AM to 6AM | 2PM to 11AM | 6AM to 10AM |
| 1PM to 4AM | 12AM to 1PM | 12AM to 9PM |
| 3PM to 10PM | 8AM to 5AM | 11AM to 9AM |
