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