There are total 9 hours or 540 minutes from 9pm to 6am. In words, this duration is equal to nine hours or five hundred forty minutes.
How many hours from
| 9PM to 6PM | 1AM to 1PM | 11PM to 4AM |
| 10PM to 9AM | 8AM to 10PM | 3AM to 5PM |
| 3AM to 4PM | 8AM to 3PM | 12PM to 10AM |
| 3PM to 6PM | 9PM to 11AM | 11AM to 2AM |
| 1PM to 4PM | 3PM to 10AM | 9PM to 1AM |
| 11PM to 5AM | 1PM to 10PM | 9PM to 1PM |
