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