There are total 20 hours or 1200 minutes from 8pm to 4pm. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 1AM to 7AM | 11PM to 10PM | 2AM to 11PM |
| 10AM to 9AM | 5AM to 6PM | 11AM to 9PM |
| 11PM to 9PM | 1AM to 2PM | 3AM to 4PM |
| 1PM to 9AM | 5PM to 11AM | 7PM to 3AM |
| 7PM to 4PM | 10PM to 5AM | 6AM to 12PM |
| 7AM to 1AM | 3AM to 10PM | 7AM to 11PM |
