Events That Happened on March 31
- 1864 CEConvention of Kanagawa
- 1922 CEHinterkaifeck murders
- 1970 CEJapan Airlines Flight 351
- 1993 CEBasic Law of the Macao Special Administrative Region
- 2010 CE2010 Kizlyar bombings
- 2021 CE2021 Niger coup d'état attempt
- 1504 CETreaty of Lyon
- 1992 CEFederation Treaty
- 2012 CE2012 Southern Thailand bombings
- 1872 CEManzanares Train Robbery
- 1955 CE1955 Yemeni coup attempt
- 1990 CEPoll Tax Riots
- 2016 CEMarch 2016 Diyarbakır bombing
- 1989 CEGhana-Kingdom of the Netherlands Bilateral Investment Treaty
- 1992 CEEstonia-Sweden Bilateral Investment Treaty
- 1994 CEPeople's Republic of China-Iceland Bilateral Investment Treaty
- 1995 CEAlbania-Sweden Bilateral Investment Treaty
- 1997 CEPhilippines-Switzerland Bilateral Investment Treaty
- 2004 CEBelarus-Denmark Bilateral Investment Treaty
- 2005 CEColombia-Spain Bilateral Investment Treaty
- 2011 CEIndia-Lithuania Bilateral Investment Treaty
- 2019 CEAudiology and Speech Language Pathology Interstate Compact
Natural Disasters on March 31
Records from scientific disaster catalogs that fall on this calendar day. All disaster records
- 1931 CEEarthquake — Nicaragua, Managua (M 5.6)· 2,450 deaths
- 1648 CEEarthquake — Turkey, Van· 2,000 deaths
- 1930 CEEarthquake — Nicaragua, Managua· 1,000 deaths
- 1955 CEEarthquake — Philippines, Mindanao: Lanao, Ozamiz, Cotabato (Mw 7.4)· 465 deaths
- 1893 CEEarthquake — Turkey, Malatya (Ms 6.7)· 400 deaths
- 1983 CEEarthquake — Colombia, Sw, Popayan (Ms 4.9)· 350 deaths
- 1928 CEEarthquake and tsunami — Turkey, Tepekoy, Torbali (Ms 6.5)· 170 deaths
- 2006 CEEarthquake — Iran, Western: Borujerd, Dorud (Mw 6.1)· 70 deaths
- 2003 CEFlood: Indonesia (2003-03-31)· 39 deaths
- 1761 CETsunami — Sw Portugal· 25 deaths
- 2023 CEFlood: Burundi (2023-03-31)· 14 deaths
- 1952 CEFlash Flooding: Portugal (1952-03-31)· 11 deaths
- 2013 CEFlood: Mauritius (2013-03-31)· 11 deaths
- 2002 CEFlood: Canary Islands (2002-03-31)· 8 deaths
- 1965 CEEarthquake — Greece (M 7.1)· 6 deaths
- 2002 CEEarthquake and tsunami — Taiwan, Taipei (Mw 7.1)· 5 deaths
- 1987 CEFlood: United States of America (1987-03-31)· 5 deaths
- 1901 CEEarthquake and tsunami — Bulgaria, Balchik (Ms 7.2)· 4 deaths
- 1901 CEEarthquake — Bulgaria, Balchik, Kavarna, Blatnitsa, Limanu (Ms 6.4)· 4 deaths
- 1963 CEEarthquake — Iran, Hendojan (Ms 5)· 4 deaths
- 2007 CETsunami — Yellow Sea· 4 deaths
- 1979 CETsunami — Nagasaki, Japan· 3 deaths