Accurate measurements have been collected for more than a century.
The point of land is called a cape
A few major cities located on 38 degrees north latitude:
Niigata, Japan
Seoul, South Korea
Shijiazhuang, China
Taiyuan, China
İzmir, Turkey
Athens, Greece
Palermo, Italy
Lisbon, Portugal
Washington D.C., USA
St. Louis, Missouri, USA
Sacramento, USA
All 3 sciences, geology, criminology and psychology in human geography, oceanography (if thats a thing), vulcanology
No, NY and Cali are in the same country (USA). The US is in the northern or Western hemisphere, depending on how you look at it.