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