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