April 18 of each year is designated as Republic of Ireland Day to be observed throughout the State as a day in recognition of the anniversary of April 18, 1949, the day in which the Republic of Ireland officially declared itself independent from Great Britain, in recognition of the Republic of Ireland and its people, and in recognition of the many Illinoisans of Irish descent who have made a lasting impact upon our State. Each year, within 10 days before Republic of Ireland Day, the Governor shall issue a proclamation announcing the recognition of Republic of Ireland Day, and designate the official events that shall be held in honor of Republic of Ireland Day and the contributions of Illinoisans of Irish descent.
5 ILCS 490/9