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