There are total 12 hours or 720 minutes from 9am to 9pm. In words, this duration is equal to twelve hours or seven hundred twenty minutes.
How many hours from
| 2AM to 8PM | 11PM to 1PM | 10AM to 9PM |
| 2AM to 3PM | 3PM to 10AM | 6PM to 5PM |
| 12AM to 2PM | 11AM to 12PM | 12AM to 10AM |
| 3PM to 1PM | 6PM to 9AM | 4PM to 7AM |
| 8AM to 3PM | 8PM to 3PM | 3PM to 2AM |
| 1AM to 7AM | 9AM to 4AM | 7PM to 5AM |
