This annual public holiday is a tribute to the fallen in the Falklands/Malvinas War, and is commemorated each year on 2 April.
It is officially called Day of the War Veterans and the Fallen in the Malvinas Islands (Día del Veterano de Guerra y los Caídos en las Islas Malvinas).
The Malvinas Islands are probably better known in the English-speaking world by their British name, the Falklands.
The holiday is a tribute to Argentina's fallen soldiers in the Falklands War, which began with the Argentine occupation of the Islands on 2 April 1982.
The war lasted 74 days, with 255 British and 649 Argentine soldiers, sailors, and airmen, and three civilian Falklanders killed.
Malvinas Day was first introduced in 2001. It replaced the June 10th "Sovereignty over Malvinas Islands" Day, which until then had commemorated the appointment of Luis Vernet as governor of the Islands by Buenos Aires in 1832.