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