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