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