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