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