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