1620: Zaporozhian Cossacks compose the well-known message addressing Sultan Mehmed IV of the Ottoman Empire.
1838: Taras Shevchenko is redeemed from serfdom, owing to painstaking efforts on the part of artist Karl Brullow and poet Vassili Zhukovsky.
1913: The Tchaikovsky Conservatory of Music is founded in Kyiv (currently Peter Tchaikovsky National Music Academy).
1919: Troops of the Ukrainian Front enter the Crimea, “liberating” the towns of Perekop and Armiansk.
1923: The 5th Conference of the Communist Party (Bolsheviks) of Ukraine adopts a resolution on the Urbanization of the government agencies.
1936: The Research Institute of Experimental Ophthalmology starts functioning in Odesa.
1945: Soviet troops enter Hungary and the Slovak capital city, Bratislava. 1954: A history museum opens in Pereiaslav-Khmelnytsky.
1995: Ukraine and Hungary sign a cooperation agreement in terms of culture, education, and science.
1996: The Verkhovna Rada of Ukraine passes the bill “On the Autonomous Republic of the Crimea.”
