April 1 - Tuanku Abdul Rahman ibni Almarhum Tuanku Muhammad, 1st Yang di-Pertuan Agong of Malaysia, dies in office. He is replaced by Hisamuddin Alam Shah ibni Almarhum Sultan Alaeddin Sulaiman Shah, Sultan of Selangor. - The United States launches the first weather satellite, TIROS-1. - The 1960 United States Census begins. There are 179,323,175 U.S. residents on this day. All people from Latin America are listed as white, including blacks from the Dominican Republic, European whites from Argentina and Mexicans who resemble Native Americans.

April 4 - At the 32nd Academy Awards ceremony, Ben-Hur wins a record number of Oscars, including Best Picture. - Elvis Presley's song "Are You Lonesome Tonight" is recorded for the first time

April 12 - Eric Peugeot, the youngest son of the founder of the Peugeot Corporation, is kidnapped in Paris. Then, he is released on April 15 in exchange for $300,000 in ransom.

April 13 - United States launches navigation satellite Transit I-b. - The proposed mass-production of the Blue Streak missile is canceled.

April 16 - The gunman David Pratt shoots South African Prime Minister Henrik Verwoerd in Johannesburg, wounding him seriously.

April 17 - Russwood Park, a baseball stadium in Memphis, Tennessee, burns to the ground from a fire shortly after a Chicago White Sox versus Cleveland Indians Major League Baseball game.

April 19 - April Revolution: South Korean students hold a nationwide pro-democracy protest against President Syngman Rhee. Thus eventually leads him to resign from that office.

April 21 - In Brazil, the country's capital (Federal District) is relocated from the city of Rio de Janeiro to the new city, Brasília, in the highlands. The actual city of Rio de Janeiro becomes the State of Guanabara.

April 27 - Togo gains independence from France, with the French-administered United Nations Trust Territory being terminated. (source: Wikipedia)