There are total 8 hours or 480 minutes from 8pm to 4am. In words, this duration is equal to eight hours or four hundred eighty minutes.
How many hours from
| 1AM to 11PM | 9AM to 12PM | 1AM to 4PM |
| 7PM to 5PM | 6PM to 11PM | 1AM to 7PM |
| 7PM to 4AM | 8AM to 11AM | 3AM to 8AM |
| 4AM to 11PM | 3PM to 11AM | 7AM to 12AM |
| 7AM to 9AM | 12AM to 10AM | 9PM to 10PM |
| 8PM to 11AM | 6PM to 5AM | 6PM to 10PM |
