Editing 1963 (section)

===April===
{{Main|April 1963}}
* [[April 6]] &ndash; [[The Kingsmen]] record their influential cover of "[[Louie Louie]]" in [[Portland, Oregon]], released in June.<ref>{{cite book|last=Peterson|first=Dick|title=Louie Louie Me Gotta Go Now|date=2005|publisher=Thalian Press|location=Sherwood, Oregon|isbn=1-4208-5610-3|page=45}}</ref>
* [[April 7]] &ndash; [[Socialist Federal Republic of Yugoslavia|Yugoslavia]] is proclaimed to be a [[socialist republic]], and [[Josip Broz Tito]] is named [[President for Life]].
* [[April 8]] &ndash; The [[35th Academy Awards]] ceremony is held. ''[[Lawrence of Arabia (film)|Lawrence of Arabia]]'' wins [[Academy Award for Best Picture|Best Picture]].
* [[April 10]] &ndash; The U.S. nuclear submarine ''[[USS Thresher (SSN-593)|Thresher]]'' sinks {{convert|220|smi|nmi km|abbr=on}} east of [[Cape Cod]]; all 129 aboard (112 crewmen plus yard personnel) die.
* [[April 11]] &ndash; [[Pope John XXIII]] issues his final [[encyclical]], ''[[Pacem in terris]]'', entitled ''On Establishing Universal Peace in Truth, Justice, Charity and Liberty'',<ref>{{cite book |first=Ugo Colombo |last=Sacco |title=John Paul II and World Politics: 20 Years of a Search for a New Approach, 1978-1998 |publisher=Peeters Publishers |year=1999 |page=6}}</ref> the first papal encyclical addressed to "all men of good will", rather than to Roman Catholics only.
* [[April 12]] &ndash; The Soviet nuclear powered submarine ''[[Soviet submarine K-33|K-33]]'' collides with the Finnish merchant vessel M/S ''Finnclipper'' in the Danish Straits. Although severely damaged, both vessels make it to port.
* [[April 14]] &ndash; The [[Institute of Mental Health (Belgrade)]] is established.
* [[April 16]] &ndash; Martin Luther King, Jr. issues his "[[Letter from Birmingham Jail]]".
* [[April 20]] &ndash; In [[Quebec]], Canada, members of the terrorist group [[Front de libération du Québec]] bomb a [[Canadian Army]] recruitment center, killing night watchman Wilfred V. O'Neill.
* [[April 21]]&ndash;[[April 23|23]] &ndash; The first election of the Supreme Institution of the [[Baháʼí Faith]] (known as the [[Universal House of Justice]], whose seat is at the [[Baháʼí World Centre]] on [[Mount Carmel]] in [[Haifa]], [[Israel]]) is held.
* [[April 22]] &ndash; [[Lester Bowles Pearson]] becomes the 14th [[Prime Minister of Canada]].
* [[April 28]] &ndash; [[1963 Italian general election|1963 general election]] is held in [[politics of Italy|Italy]].<ref>{{cite book |last1=Steinberg |first1=S. |title=The Statesman's Year-Book 1964-65: The One-Volume ENCYCLOPAEDIA of all nations |date=26 December 2016 |publisher=Springer |isbn=978-0-230-27093-0 |page=1162 |url=https://books.google.com/books?id=O43LDQAAQBAJ&dq=italy+general+election+%2228+april%22+1963&pg=PA1162 |language=en}}</ref>
* [[April 29]] &ndash; [[Buddy Rogers (wrestler)|Buddy Rogers]] becomes the first [[WWE Championship|WWWF Champion]].