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