Day of the Argentine Antarctic
In Argentina, the Day of the Argentine Antarctic, or Argentine Antarctic Sovereignty Day (Spanish: Día de la Antártida Argentina, lit. 'day of the Argentine Antarctic'), is commemorated annually on 22 February. It commemorates what Argentina says was the first permanent settlement, in 1904, in an area later claimed as an integral part of the country.
Source: Wikipedia — Day of the Argentine Antarctic (CC BY-SA 4.0)