1999 Historical Events April 20 4 sources

Columbine High School massacre: Eric Harris and Dylan Klebold kill 14 people and injure 23 others before committing suic

Columbine High School massacre: Eric Harris and Dylan Klebold kill 14 people and injure 23 others before committing suicide at Columbine High School in Columbine, Colorado.

On April 20, in the year 1999, Columbine High School massacre: Eric Harris and Dylan Klebold kill 14 people and injure 23 others before committing suicide at Columbine High School in Columbine, Colorado. This event is recorded as a Historical Events event in the history of April 20, one of 323 recorded events on this date across all of history.

On April 20, 1999, twelfth-grade students Eric Harris and Dylan Klebold murdered 13 students and 1 teacher in a school shooting and attempted bombing at Columbine High School in Columbine, Colorado, United States. 20 people were injured by the gunfire, and three others were injured while trying to escape. The attack ended when Harris and Klebold died by suicide. The Columbine massacre was the deadliest mass shooting at a K–12 school in U.S. history until the Sandy Hook Elementary School shooting in December 2012. It remains among the most infamous massacres in the United States and the deadliest mass shooting in Colorado. As of June 2025, it had inspired more than 70 copycat attacks, a phenomenon dubbed the Columbine effect, and Columbine has become a byword for modern school shootings.

Key Facts

  • This event took place on April 20, 1999 (AD era).
  • It is categorised as a Historical Events event in recorded history.
  • Referenced in 4 Wikipedia articles.
  • The event is associated with a specific geographical location (see map below).
  • Wikipedia source last updated on 19 April 2026.

On This Date in History 323

Type Year Date Event
Notable Deaths 2025 Apr 20 Hugo Gatti, Argentine footballer (born 1944)
Notable Deaths 2024 Apr 20 Antonio Cantafora, Italian film and television actor (born 1944)
Notable Deaths 2024 Apr 20 Andrew Davis, English conductor (born 1944)
Notable Deaths 2024 Apr 20 Roman Gabriel, Filipino-American NFL American footballer
Notable Deaths 2024 Apr 20 Lourdes Portillo, Mexican film director, producer, and writer (born 1943)
Historical Events 2023 Apr 20 SpaceX's Starship rocket, the largest and most powerful rocket ever built, launches for the first time
Selected Events 2023 Apr 20 SpaceX's Starship launched for the first time before exploding four minutes into flight
Notable Deaths 2022 Apr 20 Gavin Millar, Scottish film director (born 1938)
Historical Events 2021 Apr 20 State of Minnesota v
Notable Deaths 2021 Apr 20 Idriss Déby, Chadian politician and military officer (born 1952)
Notable Deaths 2021 Apr 20 Monte Hellman, American film director (born 1929)
Notable Deaths 2021 Apr 20 Les McKeown, Scottish pop singer (born 1955)
Selected Events 2021 Apr 20 Derek Chauvin was found guilty of all charges in the murder of George Floyd by a Minnesota court
Historical Events 2020 Apr 20 For the first time in history, oil prices drop below zero, an effect of the 2020 Russia-Saudi Arabia oil price war
Notable Deaths 2018 Apr 20 Avicii, Swedish DJ and musician (born 1989)
Notable Deaths 2016 Apr 20 Victoria Wood, British comedian, actress and writer (born 1953)
Historical Events 2015 Apr 20 Ten people are killed in a bomb attack on a convoy carrying food supplies to a United Nations compound in Garowe in the
Notable Deaths 2014 Apr 20 Neville Wran, Australian politician, 35th Premier of New South Wales (born 1926)
Historical Events 2013 Apr 20 A 6
Historical Events 2012 Apr 20 One hundred twenty-seven people are killed when a plane crashes in a residential area near the Benazir Bhutto Internatio
Notable Deaths 2012 Apr 20 Bert Weedon, English guitarist and songwriter (born 1920)
Notable Deaths 2011 Apr 20 Tim Hetherington, English photographer and journalist (born 1970)
Historical Events 2010 Apr 20 The Deepwater Horizon drilling rig explodes in the Gulf of Mexico, killing eleven workers and beginning an oil spill tha
Notable Deaths 2010 Apr 20 Dorothy Height, American educator and activist (born 1912)
Selected Events 2010 Apr 20 An explosion on Deepwater Horizon, an offshore rig in the Gulf of Mexico, resulted in the largest marine oil spill in hi
Historical Events 2008 Apr 20 Danica Patrick wins the Indy Japan 300, becoming the first female driver in history to win an Indy car race
Notable Deaths 2008 Apr 20 Monica Lovinescu, Romanian journalist and author (born 1923)
Selected Events 2008 Apr 20 American racing driver Danica Patrick won the Indy Japan 300, becoming the first woman to win an IndyCar auto race
Selected Events 2008 Apr 20 Fernando Lugo became the first candidate not from the Colorado Party candidate to be elected President of Paraguay in 61
Historical Events 2007 Apr 20 Johnson Space Center shooting: William Phillips barricades himself with a handgun in NASA's Johnson Space Center in Hous
Notable Deaths 2007 Apr 20 Andrew Hill, American pianist, composer, and bandleader (born 1931)
Notable Deaths 2007 Apr 20 Michael Fu Tieshan, Chinese bishop (born 1931)
Notable Births 2005 Apr 20 Tallyn Da Silva, Australian rugby league player
Notable Deaths 2005 Apr 20 Fumio Niwa, Japanese journalist and author (born 1904)
Historical Events 2004 Apr 20 The Nicoll Highway in Singapore collapses, killing four workers
Notable Deaths 2004 Apr 20 Lizzy Mercier Descloux, French musician, singer-songwriter, composer, actress, writer and painter (born 1956)
Selected Events 2004 Apr 20 An incomplete tunnel leading to the Nicoll Highway MRT station in Singapore collapsed, resulting in four deaths and the
Notable Deaths 2003 Apr 20 Bernard Katz, German-English biophysicist and academic, Nobel Prize laureate (born 1911)
Notable Deaths 2002 Apr 20 Alan Dale, American singer (born 1925)
Notable Deaths 2001 Apr 20 Giuseppe Sinopoli, Italian conductor and composer (born 1946)
Notable Deaths 1999 Apr 20 Rick Rude, American professional wrestler (born 1958)
Notable Deaths 1999 Apr 20 Rachel Scott, American victim of Columbine High School massacre (born 1981)
Notable Deaths 1999 Apr 20 Cassie Bernall, American victim of Columbine High School massacre (born 1981)
Selected Events 1999 Apr 20 Students Eric Harris and Dylan Klebold carried out a massacre at Columbine High School, killing 13 people before committ
Historical Events 1998 Apr 20 Air France Flight 422 crashes after taking off from El Dorado International Airport in Bogotá, Colombia, killing all 53
Notable Births 1997 Apr 20 Alexander Zverev, German tennis player
Notable Deaths 1996 Apr 20 Trần Văn Trà, Vietnamese general and politician (born 1918)
Notable Deaths 1995 Apr 20 Milovan Đilas, Yugoslav communist, politician, theorist and author (born 1911)
Notable Deaths 1993 Apr 20 Cantinflas, Mexican actor, producer, and screenwriter (born 1911)
Notable Deaths 1992 Apr 20 Marjorie Gestring, American springboard diver (born 1922)

This article draws on content from Wikipedia, available under CC BY-SA 4.0.

More on April 20

2021

State of Minnesota v

State of Minnesota v. Derek Michael Chauvin: Derek Chauvin is found guilty of all charges in the murder of George Floyd by the Fourth Judicial District Court of Minnesota.

2013

A 6

A 6.6-magnitude earthquake strikes Lushan County, Ya'an, in China's Sichuan province, killing at least 193 people and injuring thousands.

Browse Further

📅 All events on April 20 323 events 📖 All events in 1999 🏷 More Historical Events events
0

Comments 0

Sign in to join the discussion.