October 1, 2018 (Monday)
Armed conflicts and attacks
- 2018 Eastern Euphrates missile strike
- Iran fires six ballistic missiles from its own territory at ISIL targets near the Euphrates river valley in eastern Syria, in response to the Ahvaz military parade attack. (The Independent)
Business and economy
- Danish airline Primera Air collapses into bankruptcy and announces that it is ceasing all operations at midnight on Monday. (BBC)
Disasters and accidents
- 2018 Naga, Cebu landslide
- The death toll of the landslide in Cebu, Philippines rise to 77. Eight others are still missing and presumed dead. (ABS-CBN News)
- Thirteen people are killed and at least 30 others are injured when a military transport truck flips over on a major road in Freetown, Sierra Leone. (Channel NewsAsia)
- 2018 Pacific hurricane season
- Hurricane Walaka becomes a category 5 hurricane. It is expected to hit the Johnston Atoll. (Star-Advertiser)
International relations
- North Korea–South Korea relations
- North Korea and South Korea begin removing landmines and other explosives from the Korean Demilitarized Zone. (CBS News)
Law and crime
- A hand grenade explodes in a night club in the city of Yambio in South Sudan, killing at least ten people and injuring dozens of others. The police commissioner in the city confirmed that the explosion is not related to the ongoing civil war in the country. (Channel NewsAsia)
Politics and elections
- 2017–18 Spanish constitutional crisis
- On the one-year anniversary of the Catalan independence referendum, protesters block roads, train tracks and the entrance of the Barcelona stock exchange and students go on strike. (The Guardian)
- After an independentist demonstration, the Mossos d'Esquadra evicts riots demanding the implantation of the Republic before the main door of the Catalan Parliament in a failed attempt to assault it. (La Vanguardia) (BBC)
- Mirko Tomassoni and Luca Santolini take office as Captains Regents of San Marino. (San Marino RTV)
- Mauricio Vila Dosal takes office as Governor of the Mexican state of Yucatán. (Diario de Yucatán)
Science and technology
- The Nobel Prize in Physiology or Medicine is awarded to James P. Allison and Tasuku Honjo for their discoveries in cancer therapy. (The New York Times)
- The discovery of a third Sednoid, 2015 TG387, is announced. The 200–600-kilometre (120–370 mi) wide asteroid never approaches less than 65 astronomical units from the Sun, more than twice Neptune's distance. (Nature)