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