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