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