Events That Happened on October 21
- 1941 CEKragujevac massacre
- 1944 CENemmersdorf massacre
- 1931 CEOctober Incident
- 2013 CEOctober 2013 Volgograd bus bombing
- 1968 CE1968 Shinjuku Riot
- 1991 CEBaćin massacre
- 2008 CE2008 Imphal bombing
- 1895 CECapitulation of Tainan
- 1916 CEAssassination of Karl von Stürgkh
- 1969 CETacnazo insurrection
- 1993 CEApoquindo massacre
- 2002 CEKarkur junction suicide bombing
- 2005 CE2005 Alexandria riot
- 1837 CETreaty with the Sauk and Foxes, 1837
- 1867 CETreaty with the Kiowa and Comanche, 1867
- 1991 CEChile-Germany Bilateral Investment Treaty
- 1991 CEUnited Kingdom-Uruguay Bilateral Investment Treaty
- 1993 CEFinland-South Korea Bilateral Investment Treaty
- 1997 CEEgypt-Malawi Bilateral Investment Treaty
- 1997 CECentral African Republic-Russia Bilateral Investment Treaty
- 1998 CECyprus-Egypt Bilateral Investment Treaty
- 1998 CECentral African Republic-Paraguay Bilateral Investment Treaty
- 2003 CEEthiopia-Iran Bilateral Investment Treaty
- 2003 CEQatar-South Africa Bilateral Investment Treaty
- 2009 CEBelarus-Estonia Bilateral Investment Treaty
- 2011 CEIndia-Nepal Bilateral Investment Treaty
Natural Disasters on October 21
Records from scientific disaster catalogs that fall on this calendar day. All disaster records
- 1336 CEEarthquake — Iran, Khaf (M 7.6)· 20,000 deaths
- 1907 CEEarthquake — Tajikistan, Karatag (Ms 7.4)· 12,000 deaths
- 1996 CEFlood: India (1996-10-21)· 326 deaths
- 1953 CEFlash Flooding: Italy (1953-10-21)· 100 deaths
- 1868 CEEarthquake and tsunami — California, Hayward, San Francisco (ML 6.8)· 30 deaths
- 2005 CEFlood: India (2005-10-21)· 13 deaths
- 2015 CEFlash Flooding: Greece (2015-10-21)· 4 deaths
- 1867 CEZaozan [Zaosan]· 3 deaths
- 2021 CEFlood: Viet Nam (2021-10-21)· 1 deaths
- 2015 CEFlood: Greece,North Macedonia, Albania (2015-10-21)· 1 deaths
- 2016 CEFlash Flooding: Spain (2016-10-21)· 1 deaths
- 2019 CEFlash Flooding: Italy (2019-10-21)· 1 deaths
- 1952 CEFluvial (Riverine) Flooding: Italy (1952-10-21)· 1 deaths
- 2006 CEFlood: Philippines (2006-10-21)· 1 deaths
- 2009 CEFlash Flooding: France (2009-10-21)· 0 deaths
- 2006 CEFlood: Canada (2006-10-21)· 0 deaths
- 2001 CEFlood: United Kingdom of Great Britain and Northern Ireland (2001-10-21)· 0 deaths
- 2001 CEFlash Flooding: United Kingdom (2001-10-21)· 0 deaths
- 1987 CEFlash Flooding: United Kingdom (1987-10-21)· 0 deaths
- 2019 CEFlood: Somalia,Ethiopia (2019-10-21)· 0 deaths
- 2014 CEFlood: United States of America (2014-10-21)· 0 deaths
- 1766 CEEarthquake — Venezuela, Cumana, San Juan Bautista, Trinidad (Ms 7.5)
- 1905 CEEarthquake — Georgia, Caucasus (Ms 7.5)
- 1951 CEM 7.5 - 58 km SSW of Hualien City, Taiwan