The temperature on April 30, 1917 was between 2.5 °C and 16.2 °C and averaged 9.6 °C. There was 11.4 hours of sunshine (77%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
March 26 » World War I: First Battle of Gaza: British troops are halted after 17,000 Turks block their advance.
June 23 » In a game against the Washington Senators, Boston Red Sox pitcher Ernie Shore retires 26 batters in a row after replacing Babe Ruth, who had been ejected for punching the umpire.
July 12 » The Bisbee Deportation occurs as vigilantes kidnap and deport nearly 1,300 striking miners and others from Bisbee, Arizona.
July 17 » King George V issues a Proclamation stating that the male line descendants of the British Royal Family will bear the surname Windsor.
November 8 » The first Council of People's Commissars is formed, including Vladimir Lenin, Leon Trotsky and Joseph Stalin.
December 20 » Cheka, the first Soviet secret police force, is founded.
Day of marriage May 9, 1942
The temperature on May 9, 1942 was between 1.5 °C and 19.2 °C and averaged 10.5 °C. There was 13.7 hours of sunshine (89%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 8 » World War II: Japan invades Singapore.
February 19 » World War II: Nearly 250 Japanese warplanes attack the northern Australian city of Darwin, killing 243 people.
August 27 » First day of the Sarny Massacre.
September 9 » World War II: A Japanese floatplane drops incendiary bombs on Oregon.
September 21 » The Holocaust in Ukraine: In Dunaivtsi, Ukraine, Nazis murder 2,588 Jews.
September 23 » World War II: The Matanikau action on Guadalcanal begins: U.S. Marines attack Japanese units along the Matanikau River.
Day of death May 1, 1988
The temperature on May 1, 1988 was between 5.4 °C and 20.3 °C and averaged 13.3 °C. There was 4.6 mm of rain during 3.4 hours. There was 5.9 hours of sunshine (40%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
May 8 » A fire at Illinois Bell's Hinsdale Central Office triggers an extended 1AESS network outage once considered to be the "worst telecommunications disaster in US telephone industry history".
May 29 » The U.S. President Ronald Reagan begins his first visit to the Soviet Union when he arrives in Moscow for a superpower summit with the Soviet leader Mikhail Gorbachev.
June 4 » Three cars on a train carrying hexogen to Kazakhstan explode in Arzamas, Gorky Oblast, USSR, killing 91 and injuring about 1,500.
July 23 » General Ne Win, effective ruler of Burma since 1962, resigns after pro-democracy protests.
September 8 » Yellowstone National Park is closed for the first time in U.S. history due to ongoing fires.
December 1 » World AIDS Day was proclaimed worldwide by the UN member states.
When copying data from this family tree, please include a reference to the origin: Jaap Voets, "Family tree Voets", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-voets/I273.php : accessed February 15, 2026), "Johan Wilhelm Heller (1917-1988)".
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