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