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