April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of death June 30, 1963
The temperature on June 30, 1963 was between 11.6 °C and 21.8 °C and averaged 16.3 °C. There was 0.5 mm of rain during 0.5 hours. There was 6.2 hours of sunshine (37%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
March 17 » Mount Agung erupted on Bali killing more than 1,100 people.
May 30 » 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.
June 5 » The British Secretary of State for War, John Profumo, resigns in a sex scandal known as the "Profumo affair".
June 16 » In an attempt to resolve the Buddhist crisis in South Vietnam, a Joint Communique was signed between President Ngo Dinh Diem and Buddhist leaders.
July 22 » Crown Colony of Sarawak gains self-governance.
October 3 » A violent coup in Honduras begins two decades of military rule.
When copying data from this family tree, please include a reference to the origin: Ronald Kok, "Family tree Kok", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_kok/I3445.php : accessed February 5, 2026), "Arie Vastrick (1897-1963)".
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