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