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