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