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