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