WHAT ALL HAPPENED APRIL TO MAY 1963
Find out what all happened April to May 1963

Kuwait joins the United Nations. (14. May 1963)

The Soviet nuclear-powered submarine K-33 collides with the Finnish merchant vessel M/S Finnclipper in the Danish straits. (12. April 1963)

Baldwin–Kennedy meeting on race relations in the US (24. May 1963)

The Universal House of Justice of the Bahá'í Faith is elected for the first time. (21. April 1963)

Racist bombings in Birmingham, Alabama disrupt nonviolence in the Birmingham campaign and precipitate a crisis involving federal troops. (11. May 1963)

The Bristol Bus Boycott is held in Bristol to protest the Bristol Omnibus Company's refusal to employ Black or Asian bus crews, drawing national attention to racial discrimination in the United Kingdom. (30. April 1963)

A protest against pro-Catholic discrimination during the Buddhist crisis is held outside South Vietnam's National Assembly, the first open demonstration during the eight-year rule of Ngo Dinh Diem. (30. May 1963)

Pope John XXIII issues Pacem in Terris, the first encyclical addressed to all instead of to Catholics alone. (11. April 1963)

Project Mercury: The launch of the final Mercury mission, Mercury-Atlas 9 with astronaut L. Gordon Cooper on board. He becomes the first American to spend more than a day in space. (15. May 1963)

Marriage of HRH Princess Alexandra of Kent to the Hon Angus Ogilvy at Westminster Abbey in London. (24. April 1963)

Dr. Martin Luther King, Jr. pens his Letter from Birmingham Jail while incarcerated in Birmingham, Alabama for protesting against segregation. (16. April 1963)

The New York Post Sunday Magazine publishes Dr. Martin Luther King, Jr.'s Letter from a Birmingham Jail, drafted shortly after his arrest on April 12th during the Birmingham Campaign advocating for civil rights and an end to segregation in Birmingham, Alabama. The letter was in response to "A Call for Unity": a statement made by eight white Alabama clergymen against King and his methods, following his arrest, and became one of the most-anthologized statements of the civil rights movement. (19. May 1963)

In Libya, amendments to the constitution transform Libya (United Kingdom of Libya) into one national unity (Kingdom of Libya) and allows for female participation in elections. (26. April 1963)

In Addis Ababa, Ethiopia, the Organisation of African Unity is established. (25. May 1963)

129 American sailors die when the submarine USS Thresher sinks at sea. (10. April 1963)

The U.S. Supreme Court case Brady v. Maryland is decided. (13. May 1963)

Berthold Seliger launches a rocket with three stages and a maximum flight altitude of more than 100 kilometres near Cuxhaven. It is the only sounding rocket developed in Germany. (2. May 1963)

An assassination attempt of Greek left-wing politician Grigoris Lambrakis, who will die five days later. (22. May 1963)

South Vietnamese soldiers of Catholic President Ngo Dinh Diem open fire on Buddhists defying a ban on the flying of the Buddhist flag on Vesak, killing nine. (8. May 1963)