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O Dia que Durou 21 Anos

2012 film

Manuscripts, fine bindings, an engraving plate and preserved performance ephemera
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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 5, 2026
Entity authorityQ14332398 ↗
Source-derived summary

O Dia que Durou 21 Anos (The Day That Lasted 21 Years) is a Brazilian documentary film directed by Camilo Tavares that shows the influence of the U.S. government in the 1964 Brazilian coup d'état. Original White House tapes with John F. Kennedy and Lyndon Johnson as well as CIA Top Secret documents reveal how the US government planned to overthrow Brazilian elected president João Goulart. The film has won three awards in international festivals cinemas, two of these in the United States and one in France.

Synopsis

The 1964 Brazilian coup d'état (Portuguese: Golpe de estado no Brasil em 1964 or, more colloquially, Golpe de 64) on March 31, 1964, culminated in the overthrow of Brazilian elected President João Goulart by the Armed Forces. On April 1, 1964, the United States expressed its support to the new military regime.

The documentary explores the American involvement in the coup that culminated in a brutal dictatorship that would last for the next 21 years.

The US ambassador at the time, Lincoln Gordon, and the military attaché, Colonel Vernon A. Walters, kept in constant contact with President Lyndon B. Johnson as the crisis progressed.

Editorial summary

The public source identifies “O Dia que Durou 21 Anos” as 2012 film. This brief keeps that definition visible, then builds a research path around Durou, Anos and film.

Editorial reviewBest approached as a cultural-object dossier: authorship and date matter, but circulation and reception often explain the wider significance. The current lead gives the account dated anchors—1964—that can be checked directly. The linked authority record independently contributes the date 2012-01-01. Its value is orientation rather than verdict, with Durou, Anos and film providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “O Dia que Durou 21 Anos”, the useful work is to connect “2012 film” to the records capable of establishing context and consequence.

Evidence profile

Object files, edition statements, performance records and contemporary criticism preserve different stages of the work’s history. The source revision retrieved here is dated Sep 5, 2026. The linked authority identifier is Q14332398. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1964.

Critical limits

Later fame can flatten the distinction between original context, subsequent adaptation and institutional collecting history. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Separate the work, its editions or performances, and its later reception. Catalogue records, publication histories and object files often preserve different parts of that story.

Best used for
  • Identifying works and editions
  • Tracing reception history
  • Finding collection records
Verify next

The original object or edition, catalogue raisonné, performance record, rights file and holding institution.

Three-step research path

  1. Establish the record: confirm the title “O Dia que Durou 21 Anos”, its source revision and the description used here.
  2. Expand the search: follow O Dia que Durou 21 Anos primary sources, O Dia que Durou 21 Anos archive and Durou research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “O Dia que Durou 21 Anos”?
  2. Which edition, object, performance or recording is being described?
  3. How did later circulation or interpretation alter the work’s reception?
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Source & attribution

This entry incorporates text from “O Dia que Durou 21 Anos” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.