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