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