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
| 4AM to 9AM | 4AM to 7PM | 12AM to 3AM |
| 7AM to 4PM | 4PM to 7PM | 2AM to 11AM |
| 6AM to 7PM | 11AM to 3AM | 4PM to 3PM |
| 2PM to 3PM | 1PM to 12PM | 12PM to 10AM |
| 10PM to 3AM | 10PM to 7PM | 2PM to 11PM |
| 5AM to 12AM | 4PM to 4AM | 7PM to 8PM |
