1655 - Russo-Polish War (1654-1667): the Russian army enters the capital of the Grand Duchy of Lithuania, Vilnius, which it holds for six years 1790 - First US patent is granted to Samuel Hopkins for a potash process 1853 - First nighttime surgery performed at Lychakiv Hospital in Lemberg (now Lviv, Ukraine) using new kerosene oil lamps invented by Ignacy Łukasiewicz 1981 - Mid-season strike by MLB players ends after 42 days, causing the cancellation of 713 games; players and owners come to an agreement on free agent compensation 1987 - Battle between Iranian pilgrims and Saudi-Arabian troops kills 402 2021 - Australian swimmer Kaylee McKeown wins gold in the 200 m backstroke to complete the 100/200 m double at the Tokyo Olympic Games 2022 - Al Qaeda leader Ayman al-Zawahiri, who helps plan the 9/11 attacks, is killed in a CIA drone strike in Kabul, Afghanistan; US President Joe Biden calls it the group's biggest blow since Osama bin Laden is killed 2024 - Australian slalom canoeist Jessica Fox successfully defends her C-1 slalom gold medal with a time of 101.06 seconds and completes the K-1/C-1 double at the Paris Olympic Games More Historical Events »