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