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