There are total 11 hours or 660 minutes from 1am to 12pm. In words, this duration is equal to eleven hours or six hundred sixty minutes.
How many hours from
| 12AM to 9AM | 6PM to 4AM | 11AM to 9AM |
| 12PM to 1PM | 7PM to 7AM | 3PM to 4AM |
| 10AM to 1AM | 4AM to 7AM | 10PM to 6PM |
| 9PM to 2AM | 11AM to 5PM | 9AM to 11PM |
| 2PM to 8PM | 10AM to 8AM | 8PM to 10AM |
| 1AM to 2PM | 4PM to 2AM | 9PM to 11PM |
