St. Patrick's Day is a holiday celebrated on March 17th. It honors St. Patrick, who lived a very long time ago. He is the patron saint of Ireland. Even though St. Patrick wasn't Irish himself, he became an important figure in Irish history and culture. That's why Ireland made St. Patrick's Day a national holiday to celebrate Irish heritage.

People celebrate St. Patrick's Day all over the world, even in places without many Irish people! On March 17th, many cities have big parades with dancers, music, and floats. To celebrate, people wear green clothes, which represents Ireland's green hills and fields. Some other St. Patrick's Day symbols are leprechauns, shamrocks, pots of gold, and harps.