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