World Mosquito Day – This day is observed on August 20 to raise awareness about the causes of malaria and other diseases caused by mosquitoes.
International Day of Remembrance and Tribute to the Victims of Terrorism – This day is dedicated to honoring and supporting the victims and survivors of terrorism.
National Radio Day – This day is celebrated to acknowledge the role of radio as a means of communication and entertainment.
World Honey Bee Day – This day is dedicated to creating awareness about the importance of honey bees and their role in food production and biodiversity.
636: The Battle of Yarmouk takes place in Syria, with the Arab army under Khalid ibn al-Walid defeating the Byzantine army.
1469: The Battle of Montlhéry takes place in France, with the forces of King Louis XI defeating a rebellion by the nobles.
1858: Charles Darwin first publishes his theory of evolution through natural selection in a paper entitled “On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection” in the Journal of the Proceedings of the Linnean Society of London.
1968: The Soviet Union and other Warsaw Pact countries invade Czechoslovakia to put an end to the Prague Spring, a period of political liberalization in the country.
1991: Estonia declares independence from the Soviet Union, becoming the first of the Baltic states to do so.