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