There are total 12 hours or 720 minutes from 1pm to 1am. In words, this duration is equal to twelve hours or seven hundred twenty minutes.
How many hours from
| 6AM to 11PM | 8AM to 11AM | 4AM to 6AM |
| 7AM to 8PM | 2AM to 12AM | 8AM to 3AM |
| 6PM to 4AM | 3AM to 6PM | 5AM to 7AM |
| 10PM to 8PM | 11AM to 9PM | 6AM to 10AM |
| 1AM to 7AM | 4AM to 12AM | 11AM to 9AM |
| 5PM to 12PM | 4AM to 8AM | 11AM to 9PM |
