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