Events That Happened on May 31
- 1902 CETreaty of Vereeniging
- 1933 CETanggu Truce
- 2010 CE2010 Gaza flotilla raid
- 1404 CEPeace of Raciąż
- 1969 CE1969 race riots of Singapore
- 1997 CERussian–Ukrainian Friendship Treaty
- 2017 CEMay 2017 Kabul attack
- 1974 CEAgreement on Disengagement between Israel and Syria
- 1989 CETarapoto massacre
- 2001 CEProtocol against the Illicit Manufacturing of and Trafficking in Firearms
- 2024 CE2024 Mannheim stabbing
- 1838 CEBattle of Bossenden Wood
- 1905 CE1905 Rue de Rohan bombing
- 1972 CEPeteano massacre
- 2025 CE2025 Paris Saint-Germain celebration riots
- 2001 CEEcuador-Sweden Bilateral Investment Treaty
Natural Disasters on May 31
Records from scientific disaster catalogs that fall on this calendar day. All disaster records
- 1970 CEEarthquake and tsunami — Peru, Northern, Pisco, Chiclayo (Mw 7.9)· 66,794 deaths
- 1818 CEEarthquake and tsunami — Mexico, Morelos-Guerrero, Mexico City, Guadalajara (Ms 8.2)· 2,000 deaths
- 1946 CEEarthquake — Turkey, Ustukran (Mw 5.9)· 840 deaths
- 2000 CEFlood: China (2000-05-31)· 94 deaths
- 2006 CEFlood: India (2006-05-31)· 41 deaths
- 2006 CEFlood: India,Bangladesh (2006-05-31)· 21 deaths
- 1993 CEFlood: Haiti,Cuba (1993-05-31)· 20 deaths
- 1986 CEFlood: United States of America (1986-05-31)· 10 deaths
- 1995 CEFlood: Iran (Islamic Republic of) (1995-05-31)· 10 deaths
- 2016 CEFluvial (Riverine) Flooding: Germany (2016-05-31)· 8 deaths
- 1994 CEFlood: Armenia (1994-05-31)· 5 deaths
- 2004 CEFlood: China (2004-05-31)· 4 deaths
- 2008 CEFlood: Belize (2008-05-31)· 2 deaths
- 2013 CEFluvial (Riverine) Flooding: Switzerland (2013-05-31)· 1 deaths
- 1995 CEFluvial (Riverine) Flooding: Italy (1995-05-31)· 1 deaths
- 1998 CEFlood: Tajikistan (1998-05-31)· 0 deaths
- 2016 CEFlash Flooding: Austria (2016-05-31)· 0 deaths
- 2019 CEFlood: Romania (2019-05-31)· 0 deaths
- 1990 CEFlood: United States of America (1990-05-31)· 0 deaths
- 1997 CEFlash Flooding: Spain (1997-05-31)· 0 deaths
- 2019 CEFluvial (Riverine) Flooding: Romania (2019-05-31)· 0 deaths
- 2006 CEFlood: Thailand (2006-05-31)· 0 deaths
- 2000 CEFlood: Viet Nam (2000-05-31)· 0 deaths