Saint Patrick's feast day, as a kind of national day, was already being celebrated by the Irish in Europe in the ninth and tenth centuries. In later times he became more and more widely known as the patron of Ireland. Saint Patrick's feast day was finally placed on the universal liturgical calendar in the Catholic Church due to the influence of Waterford-born Franciscan scholar Luke Wadding in the early 1600s. Saint Patrick's Day thus became a holy day of obligation for Roman Catholics in Ireland. The church calendar avoids the observance of saints' feasts during certain solemnities, moving the saint's day to a time outside those periods. Saint Patrick's Day is occasionally affected by this requirement, when 17 March falls during Holy Week. This happened in 1940, when Saint Patrick's Day was observed on 3 April in order to avoid it coinciding with Palm Sunday, and again in 2008, where it was officially observed on 14 March, 15 March being used for St. Joseph, which had to be moved from 19 March, although the secular celebration still took place on 17 March. Saint Patrick's Day will not fall within Holy Week again until 2160. In other countries, St. Patrick's feast day is also 17 March, but liturgical celebration is omitted when impeded by Sunday or by Holy Week. Make sure you use the Discount Offers and Promotional Codes to save huge on your shopping budget. We offer St Patrick's Day Sale to enrich your online shopping experience with the St Patricks Day Coupons and Promo Codes to avail instant Discounts and best deals online.