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