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