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