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