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