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