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