There are total 15 hours or 900 minutes from 6pm to 9am. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 4AM to 3PM | 4PM to 5PM | 2AM to 11PM |
| 4AM to 1AM | 2PM to 2AM | 1AM to 8AM |
| 10AM to 11PM | 3PM to 11PM | 11AM to 5PM |
| 7PM to 4AM | 7PM to 11AM | 7AM to 8PM |
| 11AM to 12AM | 8PM to 6AM | 5AM to 9PM |
| 12AM to 8AM | 5AM to 2PM | 2PM to 12AM |
