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
| 10AM to 7PM | 12PM to 6PM | 11PM to 6AM |
| 4AM to 6PM | 5AM to 7PM | 5PM to 6AM |
| 1AM to 9AM | 2PM to 12AM | 10AM to 1PM |
| 6AM to 5AM | 3PM to 2PM | 2AM to 9PM |
| 5AM to 12AM | 7AM to 2AM | 8PM to 12AM |
| 7AM to 8AM | 2PM to 8AM | 3PM to 11PM |
