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