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