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