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