There are total 8 hours or 480 minutes from 4am to 12pm. In words, this duration is equal to eight hours or four hundred eighty minutes.
How many hours from
| 8AM to 9AM | 11AM to 7PM | 11AM to 8AM |
| 4PM to 8AM | 12PM to 8AM | 11AM to 1AM |
| 12AM to 6AM | 6AM to 8AM | 7PM to 7AM |
| 6PM to 1PM | 11AM to 6AM | 4AM to 11PM |
| 9PM to 5AM | 5PM to 9PM | 5PM to 8AM |
| 2PM to 3PM | 2AM to 12PM | 12AM to 1PM |
