There are total 9 hours or 540 minutes from 12pm to 9pm. In words, this duration is equal to nine hours or five hundred forty minutes.
How many hours from
| 1AM to 8AM | 1PM to 6AM | 8AM to 3PM |
| 2AM to 6PM | 7AM to 9PM | 11PM to 12AM |
| 5AM to 10AM | 7AM to 11PM | 8PM to 3PM |
| 11AM to 6PM | 2PM to 10PM | 3PM to 12AM |
| 8PM to 1PM | 3AM to 11PM | 1AM to 3PM |
| 12PM to 1AM | 7PM to 5PM | 5AM to 1AM |
