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