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