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