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