About the day » Saturday April 13, 1963Calender converter

• Jan Auke (Ir.) Hovius, Groningen († 2020)
• Arthur Willem-Johan Maria Donkers, Ridderkerk
• Izaäk Kornelis van Daalen, Maasland, Nederland († 1996)
• Geertruida Cornelia Slabbekoorn, 's-Heer Hendrikskinderen, Zeeland, Nederland The Netherlands († 1986)
• Colette Gryspeerdt († 2024)
• Jan Cornelis Bremer, Den Burg, Noord-Holland, Nederland († 1982)
• Yvonne Josephina Maria Stroink, Weerselo
• Jan Cornelis Bremer, Den Burg (Texel), Nederland († 1982)
• Helena Johanna Denise Schuurbiers, Woensdrecht, Noord-Brabant, Nederland († 1963)
• Ir. Jan Auke Hovius, Groningen, Nederland († 2020)

• Barney Kempers (93)
• Arie de Graaf (82)
• Barney Kempers (93)
• Bastiaan Floris de Leeuw (20), Utrecht, Nederland
• Abele van der Harst (69), Ureterp, Opsterland, Friesland, Nederland
• Antje Taekes van der Meer (64), Warga
• Albertus Hendrikus (Petronella Anna Wessels (geboren Wakkerman)) Wessels (77), Farmsum, Nederland
• Annechien MULDER (81), Hoogkerk Groningen Netherlands
• Abraham Boekbinder (89)
• Adrianus Hartog (66), Zaandam, Noord-Holland, Nederland

• 1960 » Bob Casey, Jr., American lawyer and politician, senior senator of Pennsylvania
• 1960 » Lyn Brown, English social worker and politician
• 1960 » Olaf Ludwig, German cyclist and manager
• 1961 » Hiro Yamamoto, American bass player and songwriter
• 1962 » Hillel Slovak, Israeli-American guitarist († 1988)
• 1963 » Garry Kasparov, Russian chess player and author
• 1964 » Caroline Rhea, Canadian actress and comedian
• 1964 » Davis Love III, American golfer and sportscaster
• 1964 » John Swinney, Scottish businessman and politician, Deputy First Minister of Scotland
• 1965 » Patricio Pouchulu, Argentinian architect and educator

• 1956 » Emil Nolde, Danish-German painter and educator (b. 1867)
• 1959 » Eduard van Beinum, Dutch pianist, violinist, and conductor (b. 1901)
• 1961 » John A. Bennett, American soldier (b. 1935)
• 1962 » Culbert Olson, American lawyer and politician, 29th Governor of California (b. 1876)
• 1966 » Abdul Salam Arif, Iraqi colonel and politician, 2nd President of Iraq (b. 1921)
• 1966 » Carlo Carrà, Italian painter (b. 1881)
• 1966 » Georges Duhamel, French soldier and author (b. 1884)
• 1967 » Nicole Berger, French actress (b. 1934)
• 1969 » Alfred Karindi, Estonian pianist and composer (b. 1901)
• 1971 » Michel Brière, Canadian ice hockey player (b. 1949)

• Koningin Juliana (Huis van Oranje-Nassau) was from September 4, 1948 till April 30, 1980 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• In The Netherlands , there was from May 19, 1959 to July 24, 1964 the cabinet De Quay, with Prof. dr. J.E. de Quay (KVP) as prime minister.
• In The Netherlands , there was from July 24, 1963 to April 14, 1965 the cabinet Marijnen, with Mr. V.G.M. Marijnen (KVP) as prime minister.
• The Netherlands had about 11.9 million citizens.
• January 8 » Leonardo da Vinci's Mona Lisa is exhibited in the United States for the first time, at the National Gallery of Art in Washington, D.C.
• May 22 » Greek left-wing politician Grigoris Lambrakis is shot in an assassination attempt, and dies five days later.
• June 24 » The United Kingdom grants Zanzibar internal self-government.
• August 5 » Cold War: The United States, the United Kingdom, and the Soviet Union sign the Partial Nuclear Test Ban Treaty.
• September 4 » Swissair Flight 306 crashes near Dürrenäsch, Switzerland, killing all 80 people on board.
• December 26 » The Beatles' "I Want to Hold Your Hand" and "I Saw Her Standing There" are released in the United States, marking the beginning of Beatlemania on an international level.

The temperature on April 13, 1963 was between -2.5 °C and 11.6 °C and averaged 4.8 °C. There was 7.3 hours of sunshine (53%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest.