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