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