Saint Patrick's Day is a cultural and religious holiday celebrated annually on March 17th, honoring the patron saint of Ireland, Saint Patrick. It is a public holiday in the Republic of Ireland, Northern Ireland, and several other countries worldwide. The day is marked by parades, wearing green clothing, and the consumption of traditional Irish food and drinks, such as corned beef and cabbage, Irish soda bread, and Guinness beer. Many people also attend church services and participate in cultural events to celebrate Ireland's rich history and traditions. Overall, it is a joyous and festive occasion that brings people together to celebrate the Irish heritage and culture.