Wikipedia:Selected anniversaries/May 17
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May 17: Ascension Thursday in Christianity (2007); Constitution Day in Norway (1814), Galician Literature Day in Galicia, Spain.
- 1590 - Anne of Denmark (pictured) was crowned Queen of Scotland in the abbey church at Holyrood Palace.
- 1792 - The New York Stock Exchange was formed.
- 1865 - The International Telecommunication Union was founded as the International Telegraph Union in Paris.
- 1900 - Second Boer War: The Siege of Mafeking was lifted after 217 days.
- 1943 - World War II: RAF Dam Busters successfully deployed bouncing bombs on German dams in Operation Chastise.