Wikipedia:Selected anniversaries/November 15
November 15: Republic Day in Brazil (1889), Shichigosan in Japan.
- 655 – Penda of Mercia was defeated by Oswiu of Northumbria at the Battle of the Winwaed in what is modern-day Yorkshire.
- 1889 – A military coup led by Field Marshal Deodoro da Fonseca overthrew Emperor Pedro II and declared Brazil a republic.
- 1920 – The first general assembly of the League of Nations was held in Geneva, Switzerland, with 42 founding members.
- 1971 – Intel released the 4004 4-bit central processing unit (pictured), the world's first commercially available microprocessor, capable of executing approximately 60,000 instructions per second.
- 1985 – Northern Ireland peace process: British Prime Minister Margaret Thatcher, and the Irish Taoiseach Garret FitzGerald signed the Anglo-Irish Agreement, giving the Irish Government an advisory role in Northern Ireland's government.
- 1988 – The Soviet Buran spacecraft, a reusable vehicle built in response to NASA's Space Shuttle program, was launched, unmanned, on her first and only space flight.
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