Yesterday marked the official arrival of spring, the Vernal Equinox, surely one of the most welcome calendar dates in the year. Weather has nothing to do with it. We have certainly not escaped from winter on March 21. On this date in 1967, New York had nearly ten inches of snow, and a blizzard dumped almost as much on us at the beginning of April in 1986 and again, in 2014, the last spiteful gesture of winter hit us on tax day, which made it even worse. So don’t relax too soon.