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