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