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