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