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