Wikipedia:Selected anniversaries/April 26
April 26: Holy and Great Saturday (Eastern Christianity, 2008)
- 1478 – In a conspiracy to replace the Medici family as rulers of the Florentine Republic, the Pazzi family attacked Lorenzo de' Medici (pictured) and killed his brother Giuliano during High Mass at the Florence Duomo.
- 1865 – American Army soldier Boston Corbett cornered and fatally shot John Wilkes Booth, the assassin of U.S. President Abraham Lincoln.
- 1937 – Spanish Civil War: The Bombing of Guernica by the Condor Legion of the German Luftwaffe resulted in a devastating firestorm.
- 1964 – Tanganyika and Zanzibar merged to form Tanzania.
- 1986 – The Chernobyl Nuclear Power Plant near Chernobyl, Ukrainian SSR suffered a steam explosion, resulting in a fire and a nuclear meltdown.
- 2002 – Expelled student Robert Steinhäuser murdered 16 people and wounded 7 others before committing suicide in the Erfurt school shooting in Erfurt, Germany.