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