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