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