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