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