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