= Q Britannica Login Search Britannica .. Entertainment & Pop Culture Geography & Travel March 20, 2022 First of Spring Toss that hot beverage; put away YOur sweaters, and bring out the sandals_ Spring officially starts on March 20 with the arrival of the vernal equinox in the Northern Hemisphere. This means longer warmer weather; growing plants, and mating animals The Transition from Winter Cold Summer Heat Article Science peacock SICNUP NOw Day days;