There are total 2 hours or 120 minutes from 1am to 3am. In words, this duration is equal to two hours or one hundred twenty minutes.
How many hours from
| 4AM to 7AM | 11PM to 7AM | 3AM to 10AM |
| 1PM to 9PM | 12AM to 2AM | 4AM to 5AM |
| 3PM to 9AM | 8AM to 5AM | 4PM to 11PM |
| 10AM to 11PM | 10PM to 8AM | 12AM to 7PM |
| 11PM to 1AM | 11PM to 11AM | 1PM to 2AM |
| 4AM to 5AM | 4PM to 10PM | 7AM to 12PM |
