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