February 4 » The Philippine–American War begins with the Battle of Manila.
March 6 » Bayer registers "Aspirin" as a trademark.
May 8 » The Irish Literary Theatre in Dublin produced its first play.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
July 29 » The First Hague Convention is signed.
Day of marriage November 21, 1930
The temperature on November 21, 1930 was between 9.3 °C and 13.3 °C and averaged 10.6 °C. There was 9.2 mm of rain during 5.8 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 3 » Communist Party of Vietnam is founded at a "Unification Conference" held in Kowloon, British Hong Kong.
March 13 » The news of the discovery of Pluto is announced by Lowell Observatory.
April 22 » The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.
May 24 » Amy Johnson lands in Darwin, Northern Territory, becoming the first woman to fly solo from England to Australia (she left on May 5 for the 11,000 mile flight).
July 7 » Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).
July 30 » In Montevideo, Uruguay wins the first FIFA World Cup.
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