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