Chronoways by city

1886. World-wide. May Day or International Workers' Day.

May Day has been set aside to commemorate the labor movement in many countries around the world. An international workers’ day was first called for in 1889 at the Second International, a meeting of socialists in Paris, France. The day was intended to honor anarchist workers who were sentenced to death following the Haymarket Square Riot in 1886 in Chicago, Illinois.

Web: Encarta Encyclopedia

1810. Buenos Aires (Argentine). Viceroyalty of the Río de la Plata. May Revolution.

Web: Wikipedia

1852. Argentine. Battle of Caseros.

Urquiza defeated Rosas at the Battle of Caseros and this is the prelude of a new Constitution and the origin of the Argentine Confederation.

Web: Wikipedia

1829. Spanish State. Day of Affirmation of Argentine Rights over the Malvinas.

On 10 June each year is celebrated in Argentina Day of Argentine Rights over the Malvinas Islands, Sandwich and South Atlantic.

Web: m24digital

1820. Argentine. Manuel Belgrano dies. National Flag Day.

Manuel Belgrano (Buenos Aires, June 3 1770 - June 20, 1820) was an intellectual, lawyer, economist, journalist, politician and military of the United Provinces of Río de la Plata, Argentine today. Participated in the War of Independence and is the creator of the flag of Argentine.

Web: Calendario Histórico (spanish)

Web: Especial 20 de junio Calendario Histórico (spanish)

1816. Argentine. Argentine Declaration of Independence.

The Independence of Argentine was declared on July 9, 1816 by the Congress of Tucumán.

Web: Wikipedia