October 3 (October 3) is the 276th day of the year in the Gregorian calendar (277th in leap years). There are 89 days remaining until the end of the year.
2333. p. n. e. - According to legend, the Kingdom of Korea was founded.
382 - The Gothic War ends with the conclusion of an alliance agreement between the Roman Emperor Theodosius I and the Goths.
1796 - Led by Bishop Peter I Petrovic Njegos, the Montenegrins defeat many times the forces of the Skadar pasha Mahmut Bushatlija, who died in that battle.
1824 - The Mexican Parliament adopts a constitution that makes the state an independent federal republic called the United States of Mexico.
1866 - A peace treaty in Vienna, ending a seven-week war between Italy and Austria, cedes the Veneto region and the city of Venice to Italy.
1906 - At the Radio Conference in Berlin, SOS is established as an international signal for help, instead of the hitherto most commonly used CeKuDe (CQD). Conventional came into force in July 1908.
1929 - The Kingdom of Serbs, Croats and Slovenes changes its name to the Kingdom of Yugoslavia, and the state territory is divided into nine districts, the Banovina.
1932 - Iraq gains independence from the British mandate and becomes a member of the League of Nations.
1938 - Patented PCM pulse code modulation method
1944 - The First Proletarian Brigade liberates the town of Ub in Western Serbia
1952 - Britain tests the first atomic bomb on the Monte Belo Islands off the northwest coast of Australia.
1968 - Peruvian President Fernando Belaunde Terry is ousted in a military coup by the National Revolutionary Junta, led by General Juan Velasco Alvarado. After coming to power, the military junta nationalized the oil sources and began to carry out a comprehensive agrarian reform.
1981 - After seven months, Irish nationalists in the Maze Prison in Belfast end a hunger strike against British authorities, during which 10 strikers die.
1989 - The trial of Azem Vlasi and thirteen Kosovo Albanians accused of counter-revolutionary activities and organizing a strike by Albanian miners at the Stari trg mine begins in the Pristina District Court.
1991 - The incomplete Yugoslav presidency decides to move to work in conditions of imminent danger of war, assessing that a civil war is imminent and that for such work