The temperature on March 6, 1912 was between 3.9 °C and 8.3 °C and averaged 5.6 °C. There was 7.0 mm of rain. There was 0.7 hours of sunshine (6%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 4 » The Scout Association is incorporated throughout the British Empire by royal charter.
February 25 » Marie-Adélaïde, the eldest of six daughters of Guillaume IV, becomes the first reigning Grand Duchess of Luxembourg.
April 2 » The ill-fated RMSTitanic begins sea trials.
August 14 » U.S. Marines invade Nicaragua to support the U.S.-backed government installed there after José Santos Zelaya had resigned three years earlier.
December 8 » Leaders of the German Empire hold an Imperial War Council to discuss the possibility that war might break out.
December 19 » William Van Schaick, captain of the steamship General Slocum which caught fire and killed over one thousand people, is pardoned by U.S. President William Howard Taft after 3⁄2 years in Sing Sing prison.
Day of marriage February 25, 1939
The temperature on February 25, 1939 was between 2.3 °C and 7.3 °C and averaged 4.7 °C. There was 4.4 mm of rain during 7.3 hours. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
May 23 » The U.S. Navy submarine USS Squalus sinks off the coast of New Hampshire during a test dive, causing the death of 24 sailors and two civilian technicians. The remaining 32 sailors and one civilian naval architect are rescued the following day.
September 1 » World War II: Nazi Germany and Slovakia invade Poland, beginning the European phase of World War II.
September 18 » World War II: The radio show Germany Calling begins transmitting Nazi propaganda.
October 8 » World War II: Germany annexes western Poland.
December 22 » Indian Muslims observe a "Day of Deliverance" to celebrate the resignations of members of the Indian National Congress over their not having been consulted over the decision to enter World War II with the United Kingdom.
Day of death May 18, 1995
The temperature on May 18, 1995 was between 1.7 °C and 10.3 °C and averaged 7.6 °C. There was 3.7 mm of rain during 5.8 hours. There was 0.5 hours of sunshine (3%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from Monday, August 22, 1994 to Monday, August 3, 1998 the cabinet a href="https://nl.wikipedia.org/wiki/Kabinet-Kok_I" class="extern">Kok I, with W. Kok (PvdA) as prime minister.
April 7 » First Chechen War: Russian paramilitary troops begin a massacre of civilians in Samashki, Chechnya.
July 23 » Comet Hale–Bopp is discovered; it becomes visible to the naked eye on Earth nearly a year later.
September 28 » Israeli Prime Minister Yitzhak Rabin and PLO Chairman Yasser Arafat sign the Interim Agreement on the West Bank and the Gaza Strip.
October 26 » An avalanche hits the Icelandic village Flateyri, destroying 29 homes and burying 45 people, 20 of whom died.
October 28 » The Baku Metro fire sees 289 people killed and 270 injured.
October 30 » Quebec citizens narrowly vote (50.58% to 49.42%) in favour of remaining a province of Canada in their second referendum on national sovereignty.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I112914.php : accessed February 14, 2026), "Sikke Helder (1912-1995)".
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