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