There are total 7 hours or 420 minutes from 9pm to 4am. In words, this duration is equal to seven hours or four hundred twenty minutes.
How many hours from
| 9PM to 6AM | 3AM to 6PM | 5AM to 12AM |
| 12PM to 8PM | 3AM to 1PM | 11PM to 8PM |
| 6PM to 3PM | 10AM to 8PM | 4AM to 2PM |
| 5AM to 3AM | 12AM to 6PM | 5AM to 2AM |
| 4AM to 9PM | 5PM to 4AM | 2PM to 5AM |
| 2PM to 8AM | 10PM to 11AM | 3PM to 4AM |
