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