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