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