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