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