Why is Saint Patrick’s Day celebrated on March 17?
It was the day he died
Answer: Saint Patrick was a 5th-century Romano-British Christian missionary and bishop in Ireland.
Known as the “Apostle of Ireland”, he is the primary patron saint of Ireland, along with Saints Brigit and Columba. Saint Patrick’s Day is observed on March 17, which is the date of his death. In Ireland, Saint Patrick’s Day is both a holy day and a national holiday. St. Patrick’s Day did not become a national holiday in Ireland until 1903 and the first parade wasn’t held in Dublin until 1931.
Saint Patrick’s Day, or the Feast of Saint Patrick (Irish: Lá Fhéile Pádraig, “the Day of the Festival of Patrick”), is a cultural and religious celebration held on 17 March, the traditional death date of Saint Patrick (c. AD 385–461), the foremost patron saint of Ireland.