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