St. Patrick's Day is celebrated on March 17th in Ireland and Northern Ireland as well as around the world. Some symbols of St. Patrick's Day include shamrocks, leprechauns, hats, beer, and pots of gold. According to Irish folklore, leprechauns are mischievous fairies that hide pots of gold and must be caught by humans. The document also provides links to Irish music and dance videos related to St. Patrick's Day celebrations.