Translation:What date is the Spring Festival this year?
The Chinese lunar calendar starts the year with Spring. The first day of the New Year (Chinese New Year) is the first day of Spring and starts a two week festival known as Spring Festival.
My Chinese wife, her family, and just about every person we know in our Chinese circle of friends has called it "Spring Festival." Even our friends from other countries like Malaysia or Japan have referred to it as such. I'm really shocked to hear you say you've never heard it called "Spring Festival," and can only assume it might be something unique to Polynesia.
Since I was a child, everyone in New York City has always called it Chinese New Year in English. Never heard anyone call it Spring Festival until this course.
In Northeastern US, our local spring weather begins around April, which might be the reason Chinese people chose to call it Chinese New Year based on the traditional Chinese calendar. Telling foreigners that you are celebrating a Spring Festival in February when there is 2 to 3 feet of snow on the ground would probably cause a lot of confusion. The seasons are different depending on where you live. In New Zealand summer is in December.