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