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