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