Events That Happened on April 20
- 1999 CEColumbine High School massacre
- 1746 CEJacobite rising of 1745
- 1914 CELudlow Massacre
- 1365 CETreaty of Guérande
- 1859 CETreaty of Lisbon
- 1921 CEBarcelona Convention and Statute on Freedom of Transit
- 1988 CEKuwait Airways Flight 422
- 2005 CEEcuadorean Revolution of 2005
- 1921 CEBarcelona Convention and Statute on the Regime of Navigable Waterways of International Concern
- 1942 CECSM Strike
- 2008 CEAl-Hidaya Mosque massacre
- 2008 CEHijacking of the Playa de Bakio
- 2013 CE2013 Comorian coup d'état attempt
- 2023 CEKarma massacre
- 1966 CEBenin-Switzerland Bilateral Investment Treaty
- 2004 CEItaly-Nicaragua Bilateral Investment Treaty
- 2005 CEAfghanistan-Germany Bilateral Investment Treaty
- 2015 CEBurkina Faso-Canada Bilateral Investment Treaty
Natural Disasters on April 20
Records from scientific disaster catalogs that fall on this calendar day. All disaster records
- 1935 CEEarthquake — Taiwan, Mialoi (Ms 6)· 3,276 deaths
- 1608 CEEarthquake and tsunami — Iran, Gilan, W Mazandaran (Ms 7.6)· 3,000 deaths
- 1894 CEEarthquake — Greece, Locride, Malesina-Martinon (Lokris) (Ms 6.7)· 255 deaths
- 2013 CEEarthquake — China, Sichuan Province: Longmen (Mw 6.6)· 196 deaths
- 2014 CEFlood: Afghanistan (2014-04-20)· 123 deaths
- 1949 CEEarthquake — Chile, Angol, Traiguen (Ms 7.3)· 57 deaths
- 2012 CEFlood: Kenya (2012-04-20)· 56 deaths
- 1765 CEEarthquake — El Salvador / Guatemala, Chiquimula· 50 deaths
- 1995 CEFlood: China (1995-04-20)· 40 deaths
- 1977 CEEarthquake and tsunami — Solomon Islands (Ms 6.8)· 34 deaths
- 1954 CEEarthquake — Greece (M 7)· 25 deaths
- 2009 CEFlood: Bangladesh (2009-04-20)· 21 deaths
- 2016 CEFlood: India,Bangladesh (2016-04-20)· 18 deaths
- 2012 CEFlood: Colombia (2012-04-20)· 17 deaths
- 2020 CEFlood: Somalia,Ethiopia (2020-04-20)· 10 deaths
- 2020 CEFlood: Yemen (2020-04-20)· 10 deaths
- 2009 CEFlood: Brazil (2009-04-20)· 5 deaths
- 2022 CEFlood: Uzbekistan (2022-04-20)· 4 deaths
- 2015 CEFlood: Australia (2015-04-20)· 4 deaths
- 1988 CEFlash Flooding: Czechia (1988-04-20)· 2 deaths
- 2022 CEFlood: Venezuela (Bolivarian Republic of) (2022-04-20)· 2 deaths
- 2019 CEFlood: Argentina (2019-04-20)· 2 deaths
- 1988 CEFlood: Czechoslovakia (1988-04-20)· 2 deaths