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