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