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