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