why do we celebrate st patrick's day in us?
<answer> Saint Patrick’s Day is the feast day of Saint Patrick, the patron saint of Ireland. <context> How and why we celebrate St. Patrick’s Day (CNN) — Here’s a look at what you need to know about St. Patrick’s Day, celebrated March 17th of every year. Facts: St. Patrick’s Day is the feast day of St. Patrick, the patron saint of Ireland. Saint Patrick: St. Patrick is called a Christian missionary and the Apostle of Ireland.