The temperature on December 31, 1911 was between 0.3 °C and 5.5 °C and averaged 3.4 °C. There was 0.1 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
January 18 » Eugene B. Ely lands on the deck of the USSPennsylvania anchored in San Francisco Bay, the first time an aircraft landed on a ship.
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
September 24 » His Majesty's Airship No. 1, Britain's first rigid airship, is wrecked by strong winds before her maiden flight at Barrow-in-Furness.
November 19 » The Doom Bar in Cornwall claimed two ships, Island Maid and Angele, the latter killing the entire crew except the captain.
Day of marriage June 6, 1941
The temperature on June 6, 1941 was between 10.9 °C and 14.9 °C and averaged 12.5 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
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.
April 17 » World War II: The Kingdom of Yugoslavia surrenders to Germany.
April 23 » World War II: The Greek government and King George II evacuate Athens before the invading Wehrmacht.
September 28 » World War II: The Drama uprising against the Bulgarian occupation in northern Greece begins.
December 8 » World War II: Japanese forces simultaneously invade Shanghai International Settlement, Malaya, Thailand, Hong Kong, the Philippines, and the Dutch East Indies. (See December 7 for the concurrent attack on Pearl Harbor in the Western Hemisphere.)
December 12 » World War II: Fifty-four Japanese A6M Zero fighters raid Batangas Field, Philippines. Jesús Villamor and four Filipino fighter pilots fend them off; César Basa is killed.
December 21 » World War II: A formal treaty of alliance between Thailand and Japan is signed in the presence of the Emerald Buddha in Wat Phra Kaew, Thailand.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I74147.php : accessed February 27, 2026), "Hendrikus van der Velden (1911-)".
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