There are total 3 hours or 180 minutes from 1am to 4am. In words, this duration is equal to three hours or one hundred eighty minutes.
How many hours from
| 9AM to 4PM | 4AM to 7AM | 11PM to 4PM |
| 11PM to 11AM | 1AM to 11AM | 12PM to 4PM |
| 9PM to 2PM | 7PM to 4PM | 3AM to 12PM |
| 2PM to 6AM | 4PM to 8AM | 6PM to 4PM |
| 9PM to 12AM | 8PM to 6AM | 5PM to 5AM |
| 3AM to 10AM | 12PM to 3PM | 7AM to 6PM |
