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