There are total 21 hours or 1260 minutes from 12am to 9pm. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 8PM to 3AM | 5PM to 5AM | 10PM to 5PM |
| 8PM to 1PM | 1PM to 12AM | 7AM to 11PM |
| 3AM to 9AM | 5AM to 7PM | 8PM to 11PM |
| 8PM to 4PM | 1PM to 3AM | 10AM to 3AM |
| 12AM to 11PM | 1PM to 6AM | 8PM to 10PM |
| 11AM to 11PM | 4AM to 3AM | 4PM to 2AM |
