source: en.wikipedia.org St. Patrick's Day is celebrated on March 17. It celebrates St. Patrick, the patron saint of Ireland.
Saint Patrick's Day is celebrated worldwide by Irish and non-Irish people. Celebrations are about all things Irish and the color green. People celebrate by wearing green, eating Irish food and/or green foods, and attending parades.
The four leaf clover symbolizes St. Patrick's Day. In tradition, four leaf clovers bring good luck to their finders. Why are you lucky?