There are total 19 hours or 1140 minutes from 1am to 8pm. In words, this duration is equal to nineteen hours or one thousand one hundred forty minutes.
How many hours from
| 8AM to 10PM | 2PM to 8AM | 2AM to 6PM |
| 7PM to 9PM | 11PM to 8PM | 9PM to 3AM |
| 9PM to 9AM | 3PM to 5AM | 6PM to 8AM |
| 4AM to 11PM | 9PM to 10AM | 8PM to 10AM |
| 10PM to 8AM | 10PM to 4PM | 6AM to 11AM |
| 11PM to 6AM | 1AM to 10PM | 3PM to 8PM |
