On February 2, residents of Canada and the United States of America celebrate a bright and unusual holiday for our continent - Groundhog Day. According to a legend that has come down from time immemorial, marmots who wake up predict the weather. If, when crawling out of a hole, an animal sees its shadow, it means that winter will last another 6 weeks. And vice versa, the marmot, which does not leave a shadow, foreshadows the coming spring.