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
| 6AM to 12AM | 4AM to 8AM | 8PM to 7AM |
| 9AM to 11PM | 11PM to 1AM | 4AM to 7AM |
| 11AM to 3AM | 11PM to 5AM | 1AM to 11PM |
| 10PM to 11PM | 9AM to 11PM | 12PM to 7PM |
| 1AM to 8AM | 1PM to 4AM | 7AM to 7PM |
| 4AM to 2PM | 7PM to 8PM | 10PM to 9AM |
