There are total 20 hours or 1200 minutes from 8am to 4am. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 4AM to 3AM | 9PM to 5PM | 6AM to 9PM |
| 7AM to 11PM | 11AM to 5AM | 1PM to 10AM |
| 8AM to 10AM | 1PM to 7AM | 1AM to 9AM |
| 8AM to 5PM | 1AM to 6AM | 12PM to 1PM |
| 12AM to 8PM | 8PM to 8AM | 9PM to 7PM |
| 3AM to 8AM | 12PM to 9PM | 1PM to 4AM |
