#OnThisDay in 1646 [en.wikipedia.org] – First English Civil War: Charles I surrendered himself to Scottish Covenanter leader David Leslie near Newark, England.
#OnThisDay in 1942 [en.wikipedia.org] – World War II: Aircraft from Imperial Japanese Navy vessels attacked Allied naval forces, beginning the Battle of the Coral Sea, the first naval action in which the participating ships never sighted or fired directly at each other.
#OnThisDay in 1999 [en.wikipedia.org] – A Doppler on Wheels team measured the fastest winds recorded on Earth, at 301 ± 20 mph (484 ± 32 km/h), in a tornado near Bridge Creek, Oklahoma.
#OnThisDay in 1974 [en.wikipedia.org] – Argentine president Juan Perón expelled Montoneros from a demonstration in the Plaza de Mayo in Buenos Aires, forcing the group to become a clandestine organization.
#OnThisDay in 1903 [en.wikipedia.org] – A rockslide buried part of the Canadian mining town of Frank under 110 million tonnes of rock, killing around 70 people.
#OnThisDay in 1915 [en.wikipedia.org] – First World War: Britain, France and Russia signed a secret treaty promising territory to Italy if it joined the war on their side.