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