Siri Can't Correctly Answer the First Day of Spring Question in 2014

When Does Spring Start in 2014?

I couldn't be more frustrated about the fact that Siri in iOS 7.1 could not correctly answer the question, "When is the first day of Spring?" on the first day of Spring 2014.

Siri said that the first day of Spring in 2014 is Sunday, March 23.

When I asked Google via Safari, "When does Spring start?" The search engine got the answer correct.

I know Apple can do better than this. From what source are they obtaining this answer? It makes no sense to me at all, and I am a huge Siri fan.