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