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