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