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