There are total 9 hours or 540 minutes from 3am to 12pm. In words, this duration is equal to nine hours or five hundred forty minutes.
How many hours from
| 7AM to 8AM | 1PM to 8PM | 9PM to 7AM |
| 7PM to 10AM | 9AM to 12PM | 10PM to 2PM |
| 9AM to 7PM | 9PM to 10PM | 1AM to 10PM |
| 2AM to 4PM | 7PM to 6PM | 9AM to 9PM |
| 2AM to 7PM | 10AM to 6AM | 6AM to 12PM |
| 7PM to 8AM | 3PM to 4AM | 11AM to 7AM |
