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