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