There are total 12 hours or 720 minutes from 1am to 1pm. In words, this duration is equal to twelve hours or seven hundred twenty minutes.
How many hours from
| 8PM to 11AM | 7PM to 10PM | 8PM to 1PM |
| 5AM to 5PM | 9AM to 5AM | 12AM to 11AM |
| 11PM to 1PM | 1PM to 9AM | 9AM to 5PM |
| 5PM to 10AM | 6PM to 10PM | 11PM to 1AM |
| 7AM to 1PM | 10AM to 3AM | 10PM to 2AM |
| 10AM to 5PM | 6PM to 8PM | 7PM to 10PM |
