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