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