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