At least in many Dioceses.
"When St. Patrick’s Day falls on a Friday, as it does about every seven years, the Lenten rule requiring Catholics to abstain from meat on Fridays collides with the long-held tradition of eating corned beef and cabbage.
The two occasions meet this year. March 17 marks the celebration of St. Patrick – known as the Apostle of Ireland for his years of missionary work there – and it also is a celebration of all things Irish and even green. This March 17, since it falls on a Friday in Lenten, also is a time of penitence.
The timing has not gone unnoticed by some U.S. bishops. Before Lent even started, many of them issued dispensations for Catholics in their dioceses allowing them to eat meat on St. Patrick’s Day.
The dispensation does not take Catholics totally off the hook. Many bishops advised Catholics over age 14, who are required to abstain from meat on Friday, to do an extra act of charity or penance in exchange for eating meat.
Bishop Robert C. Morlino of Madison, Wisconsin, took it a step further. In a statement, he said Catholics should also “exercise due moderation and temperance in festivities and celebrations of the memorial of St. Patrick, in keeping with the solemnity and honor that is due to so great a saint and his tireless efforts to inspire holiness in the Christian faithful.”"