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