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