Groundhog Day, February 2nd, is a popular tradition in the United States.
It is also a legend that traverses centuries, its origins clouded in the mists of time with ethnic cultures and animals awakening on specific dates.
It is the day that the Groundhog comes out of his hole after a long winter sleep to look for his shadow.

If he sees it, he regards it as an omen of six more weeks of bad weather and returns to his hole.

If the day is cloudy and, hence, shadowless, he takes it as a sign of spring and stays above ground.

The groundhog tradition stems from similar beliefs associated with Candlemas