There are total 21 hours or 1260 minutes from 12am to 9pm. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 3AM to 5AM | 1PM to 6PM | 4PM to 5AM |
| 6PM to 2PM | 9AM to 9PM | 9AM to 4AM |
| 11AM to 1AM | 4PM to 7PM | 7AM to 3PM |
| 10PM to 12AM | 9PM to 11AM | 7PM to 5AM |
| 2PM to 12AM | 6PM to 8AM | 6AM to 4PM |
| 8AM to 2PM | 9AM to 4PM | 10AM to 1PM |
