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