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