There are total 8 hours or 480 minutes from 8am to 4pm. In words, this duration is equal to eight hours or four hundred eighty minutes.
How many hours from
| 1AM to 4AM | 10AM to 9PM | 12PM to 1PM |
| 9AM to 12AM | 5AM to 1AM | 6AM to 8AM |
| 3PM to 7PM | 7AM to 2PM | 12PM to 9PM |
| 11AM to 10AM | 1AM to 6AM | 7PM to 7AM |
| 1PM to 3PM | 11AM to 2AM | 5PM to 2AM |
| 12PM to 11AM | 1PM to 7PM | 12PM to 6AM |
