Croatian parliamentary election, 2016 Croatian lawmakers approve conservative Croatian Democratic Union party leader Andrej Plenković's new coalition government 91–45.
Iran Iranian President Hassan Rouhani reshuffles his cabinet, replacing culture, education, and sports ministers. The new ministers still need the parliament's approval.
In 2016 Hillary Clinton and Donald Trump meet for the third presidential debate of the 2016 U.S. election at the University of Nevada, Las Vegas.
Czech Republic Czech police announce the arrest of a man at a Prague hotel two weeks ago who they claim is a Russian hacker suspected of targeting the U.S.
Police dispersal A police dispersal occurs between combined minority groups and anti-U.S. activists and the Philippine National Police in front of the U.S. Embassy in Manila. Police arrest 30 protesters with 60 people injured, several rammed by a police van driven during the dispersal.
Attorney General of Mexico The Attorney General of Mexico issues an arrest warrant for the former Governor of Veracruz, Javier Duarte, for suspected involvement in organized crime and money laundering.
European Space Agency The European Space Agency fails to contact its "Schiaparelli" lander during its descent through the atmosphere of the planet Mars.
Portland A natural gas explosion damages several buildings and injures eight people in downtown Portland, Oregon.
2016 Pacific typhoon season The Philippine government places more than two dozen provinces on alert before Typhoon Haima makes landfall over Luzon. Haima, downgraded by the Global Disaster Alert and Coordination System to a Category 4 storm, landfalls Cagayan province in the island's northeast. Weather forecasters expect the storm to impact up to 2.7 million people before veering northwest toward the Chinese coast on October 21.