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