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