March 19, 1930
Pope Pius XI begins a campaign of prayer against the religious persecution taking place in the Soviet Union. As a display of unity, similar services were also held in Catholic churches around the worldwide.
Karl Wilhelm Reinmuth discovers a main asteroid belt (1164 Kobolda) orbiting the sun every 4 years, from the Landessternwarte Heidelberg-Königstuhl Observatory at Heidelberg, Germany.
Ornette Coleman, American musician
Arthur James Balfour, Prime Minister of the United Kingdom (b. 1848)
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