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
| 12PM to 6PM | 3AM to 10AM | 4AM to 2PM |
| 2PM to 12AM | 3AM to 12AM | 6AM to 10PM |
| 10AM to 2PM | 1AM to 8AM | 8PM to 2AM |
| 7AM to 8PM | 9AM to 3AM | 1PM to 4AM |
| 5PM to 6PM | 2PM to 10AM | 11AM to 9PM |
| 6PM to 1AM | 11PM to 6AM | 7PM to 7AM |
