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