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