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