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