Saint Patrick's Day, colloquially Paddy's Day, is the feast day which annually celebrates Saint Patrick (386-493), the patron saint of Ireland, on March 17. It is the Irish national holiday and one of the public holidays in the Republic of Ireland (a bank holiday in Northern Ireland); the overseas territory of Montserrat; and the Canadian province of Newfoundland and Labrador. In the United States it is widely celebrated, although not an official holiday.