There are total 4 hours or 240 minutes from 4pm to 8pm. In words, this duration is equal to four hours or two hundred forty minutes.
How many hours from
| 5AM to 3PM | 7PM to 9AM | 12PM to 1AM | 
| 7PM to 1PM | 10AM to 5AM | 9PM to 10PM | 
| 4PM to 9AM | 5AM to 9PM | 2PM to 1PM | 
| 12AM to 5AM | 9AM to 3PM | 2AM to 10AM | 
| 2AM to 7PM | 5PM to 9PM | 4PM to 2AM | 
| 6PM to 8PM | 12AM to 11AM | 11PM to 5PM | 

