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