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