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