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