There are total 16 hours or 960 minutes from 4am to 8pm. In words, this duration is equal to sixteen hours or nine hundred sixty minutes.
How many hours from
| 1AM to 8PM | 11AM to 9PM | 2PM to 1AM |
| 2AM to 3AM | 11PM to 3PM | 1PM to 7AM |
| 3AM to 7AM | 8PM to 4PM | 8PM to 1AM |
| 3AM to 2PM | 2PM to 12AM | 10PM to 7PM |
| 6PM to 5AM | 1PM to 10AM | 11AM to 9AM |
| 8PM to 4PM | 9PM to 3PM | 6AM to 1AM |
