There are total 11 hours or 660 minutes from 1pm to 12am. In words, this duration is equal to eleven hours or six hundred sixty minutes.
How many hours from
| 12PM to 9AM | 10PM to 8AM | 8PM to 1PM |
| 10PM to 9PM | 8PM to 12PM | 10AM to 1PM |
| 10AM to 3AM | 6AM to 1AM | 11PM to 3AM |
| 8AM to 5PM | 7AM to 2AM | 1PM to 8PM |
| 3AM to 8PM | 8PM to 6PM | 7PM to 2PM |
| 9AM to 10AM | 5AM to 10PM | 9AM to 5PM |
