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