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