This day in history:
- 1948 – Cold War: The Tito–Stalin Split results in the expulsion of the League of Communists of Yugoslavia from the Cominform.
- 1495 – A French force heavily defeats a much larger Neapolitan and Spanish army at the battle of Seminara, leading to the creation of the Tercios by Gonzalo de Córdoba.
- 1881 – The Austro–Serbian Alliance of 1881 is secretly signed.
- 1922 – The Irish Civil War begins with the shelling of the Four Courts in Dublin by Free State forces.
Births:
- 1934 – Bette Greene, American journalist and author (died 2020)
- 1973 – Adrián Annus, Hungarian hammer thrower
- 1927 – Frank Sherwood Rowland, American chemist and academic, Nobel Prize laureate (died 2012)
Deaths:
- 2016 – Scotty Moore, American guitarist (born 1931)
- 1945 – Yunus Nadi Abalıoğlu, Turkish journalist (born 1879)
- 1980 – José Iturbi, Spanish pianist and conductor (born 1895)
Holidays:
- Vidovdan, celebrating St. Vitus and an important day in Serbian history. (Eastern Orthodox Church)
- Poznań Remembrance Day (Poland)
- Constitution Day (Ukraine)
Random Article of the day: