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