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