[RKDinOKC]

I know when spring equinox is. I understand the groundhog thing refers to weather trends and not the axis of the Earth's rotation relative to Sol.

At our old house we had an Apricot tree. My Dad planted it when I was very young. The 27 years that tree bloomed there was only 1 year that it didn't freeze hard after it had already bloomed. It was obviously in the wrong climate zone. It was however, a great indicator of the last freeze of the season. No matter how warm or nice the weather got, all but that one year it froze one last time after the Apricot tree was in full bloom. So if it was freezing and the Apricot tree was in bloom, it was the last freeze of the season. 26 out of 27 years. Sadly since we did not have more than one Apricot tree, the one year it didn't freeze, we still didn't get any Apricots.