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