Trick Question?

I asked several people a question at work today and I was surprised at the diversity of answers I received. The only thing most people had was an opinion. Here's the question.

Today is May 31st, the last day of May. Anna Kate's 5th birthday is June 30th, the last day of June. Is her birthday a month from today or a month from yesterday? Let's have your opinion.

Mean, Mean Momma