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