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