There are total 20 hours or 1200 minutes from 4am to 12am. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 6AM to 9PM | 5PM to 4AM | 11PM to 9PM |
| 1PM to 12AM | 9PM to 3AM | 11PM to 1PM |
| 5AM to 10AM | 4PM to 1AM | 1AM to 6PM |
| 12PM to 8AM | 2PM to 4AM | 7PM to 10AM |
| 3AM to 11AM | 9PM to 7PM | 11PM to 10PM |
| 8AM to 12PM | 10AM to 9PM | 11AM to 5AM |
