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