11 September – The world is plunged into a state of shock as huge terrorist attacks takes place in New York City and Washington, D.C.. The people of Ireland extend their sympathies to the people of the United States, particularly in view of the strong Irish American heritage of the New York City Fire Department.
14 September – Ireland holds a national day of mourning as a result of the atrocities in the United States. All sports, public functions, and entertainment are cancelled on orders of the government. Schools, businesses, and stores throughout the country are closed, also on orders of the government. President Mary McAleese said that the events were "an attack on the very foundations of human dignity" and left the people of Ireland "sad, shocked, sickened, grieving, disbelieving, outraged, frightened all at once."[1][2]
14 December – Irish euro coins are available in An Post and bank branches, these "Starter Packs" contain nineteen coins worth € 6.35 and can be purchased for IR£ 5.