Historical biography archive · Updated 2026-11-03

Juan Carlos Ongania Biography and Timeline

Follow Juan Carlos Ongania through 2 dated historical records for Argentina.

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Juan Carlos Ongania, historical timeline

A chronological timeline drawn from matching World History Database records.

2Distinct records

1 of 1Page

1966–1967Years on this page

1966

29 June 1966

President of Argentina

General · President of Argentina · Buenos Aires · Government / Military Government

Appointed de facto President of Argentina after the 1966 coup

Role range: 1966-1970 – 1966-1970

1967

Argentina Signs Regional Nuclear Treaty

Mexico City · Government / Nuclear Arms Control

Argentina signed the Treaty of Tlatelolco on 27 September but took many years to complete ratification.

Records, sources and methodology

These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.