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