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