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