There are total 13 hours or 780 minutes from 8pm to 9am. In words, this duration is equal to thirteen hours or seven hundred eighty minutes.
How many hours from
| 9AM to 11AM | 4AM to 2PM | 7PM to 3PM |
| 6PM to 2PM | 11PM to 4PM | 12PM to 5PM |
| 3AM to 8PM | 5PM to 1AM | 11PM to 4PM |
| 7AM to 10AM | 10PM to 5PM | 3PM to 4AM |
| 10AM to 4AM | 9AM to 3PM | 1AM to 8PM |
| 9PM to 8AM | 7PM to 1PM | 8AM to 12PM |
