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