International observance days, weeks, and months for August 20, 2026. Plus historical events and birthdays.
August 20, 2026 celebrates World Mosquito Day, plus 1 more. August 20th recognizes World Mosquito Day marking the occasion when Sir Ronald Ross discovered that female mosquitoes transmit malaria between humans.
Events that occurred on August 20 throughout history
The three papal investigators affirm the Knights Templar were absolved of heresy. The papal's concluded the accused Templars had confessed and had done penance.
The first known African captives (slaves) land at Point Comfort, Virginia. The captives were seized from a Portuguese slave ship and traded to colonists in exchange for food and supplies.
Charles Darwin publishes his theory of evolution through natural selection in The Journal of the Proceedings of the Linnean Society of London.
President Andrew Johnson formally declares the American Civil War over. The declaration provided legal order and civil authority were to be restored across the entire country.
Tchaikovsky's 1812 Overture debuts in Moscow, Russia, to commemorate the successful 1812 defense against Napoleon's invading French army.
