There are total 20 hours or 1200 minutes from 8am to 4am. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 4PM to 5PM | 11AM to 7AM | 12PM to 4AM |
| 5AM to 10PM | 7AM to 1AM | 4PM to 6PM |
| 3AM to 9PM | 4AM to 3PM | 4PM to 12PM |
| 4AM to 5AM | 3PM to 8AM | 2AM to 10PM |
| 6PM to 3AM | 1AM to 10PM | 3PM to 12AM |
| 1AM to 5AM | 8AM to 9PM | 4PM to 2PM |
