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