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