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