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