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