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