There are total 9 hours or 540 minutes from 7pm to 4am. In words, this duration is equal to nine hours or five hundred forty minutes.
How many hours from
| 10AM to 3AM | 2PM to 6AM | 8AM to 7AM | 
| 7AM to 2PM | 9AM to 1AM | 10AM to 7AM | 
| 8AM to 4AM | 4PM to 1PM | 12AM to 4AM | 
| 6AM to 11AM | 10AM to 12AM | 2AM to 6AM | 
| 10AM to 3AM | 9PM to 11PM | 6PM to 2AM | 
| 8AM to 4PM | 12AM to 2PM | 6PM to 3PM | 

