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