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