The document discusses National Snowman Burning Day. It provides context that the Sechseläuten festival in Zurich, Switzerland dates back to 1867 and involves burning a snowman figure called Böögg to predict the coming summer weather. Specifically, a quick explosion of Böögg's head means a warm, sunny summer while a slower burning predicts a cold, rainy season. Burning snowmen is a tradition representing the transition from winter to spring seasons.