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