There are total 1 hours or 60 minutes from 1am to 2am. In words, this duration is equal to one hours or sixty minutes.
How many hours from
| 4AM to 3AM | 6AM to 8PM | 10PM to 8PM |
| 12AM to 2PM | 8PM to 5AM | 7AM to 11AM |
| 7PM to 9PM | 7AM to 3PM | 3PM to 8PM |
| 2AM to 3AM | 12PM to 3PM | 9AM to 8AM |
| 7AM to 3AM | 6PM to 2PM | 12PM to 5PM |
| 11PM to 5AM | 5PM to 10PM | 10AM to 8AM |
