"Groundhog Day is February 2, and is celebrated in Canada and the US. According to legend, the groundhog emerges from its burrow at noon on that day to look for its shadow. If it is a sunny day and the groundhog sees its shadow, according to folklore it becomes frightened and returns to its hole to sleep, and winter continues for 6 more weeks. If it does not see its shadow, it remains outside because the worst of winter is over and warmer weather is on its way." -- Wikipedia.