There are total 9 hours or 540 minutes from 12am to 9am. In words, this duration is equal to nine hours or five hundred forty minutes.
How many hours from
| 11AM to 9PM | 5PM to 8PM | 8AM to 1PM |
| 11PM to 1PM | 9PM to 5PM | 8AM to 9PM |
| 5AM to 8PM | 1AM to 12AM | 2AM to 1PM |
| 9AM to 1AM | 10PM to 4PM | 12AM to 9PM |
| 10PM to 7AM | 10AM to 12AM | 8PM to 11AM |
| 5AM to 11PM | 12AM to 8AM | 7AM to 1AM |
