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