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