St. Patrick's Day is celebrated annually on March 17. The day commemorates Saint Patrick, the patron saint of Ireland. Traditions include wearing green attire, attending parades, and enjoying Irish cuisine. The image features a festive banner with the date and a shamrock design, symbolizing the holiday's Irish heritage. People around the world participate in the celebrations, making it a day of joy and cultural exchange. The spirit of St. Patrick's Day is captured in the image, inviting all to join in the festivities.