- 1580 Foundation of Buenos Aires by Juan de Garay.
- 1787 Manuel Dorrego, statesman and soldier, governor of Buenos Aires, is born.
- 1830 Juan Agustín Maza, statesman and lawyer and a representative to the Congress of Tucumán born in Mendoza is murdered.
- 1900 Leopoldo Marechal, writer, is born in Buenos Aires.
