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