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