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