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