It looks like Summer, feels like Summer, smells like Summer....it must be Summer!! The ancients had it right! Our problem is that we often do not know or perhaps have forgotten to apply the old rules; as a result we often hear things such as:"Heavens! Spring is early this year! (This in late February...)
We all know of the equinoxes and solstices. All we need do is apply them. The next such "event" is June 21st, the Summer solstice, which makes it Midsummer's day. If all is mathematically correct, then yesterday May 1st, was the beginning of Summer. Hurrah!!