Wikipedia:Selected anniversaries/May 1: Difference between revisions

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This is a list of selected May 1 anniversaries that appear in the "On this day" section of the Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial or on a day that is or will soon be on the Main Page, please post your suggestion on the talk page instead.

Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled featured article or picture of the day.

To report an error when this appears on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.

← April 30	May 2 →

May 1: May Day; International Workers' Day; Beltane in Ireland and Scotland

1786 – The Marriage of Figaro, an opera buffa composed by Wolfgang Amadeus Mozart, premiered at the Burgtheater in Vienna.

1885 – The original Chicago Board of Trade Building opened for business.

1893 – The World's Columbian Exposition, a World's Fair to celebrate the 400th anniversary of Christopher Columbus' discovery of the New World, opened in Chicago.

1898 – The American Asiatic Squadron under Commodore George Dewey defeated the Spanish Pacific Squadron under Admiral Patricio Montojo at the Battle of Manila Bay, the first engagement of the Spanish–American War.

1931 – New York City's Empire State Building (pictured), at the time the tallest building in the world, opened.

1956 – A doctor in Japan reported an "epidemic of an unknown disease of the central nervous system", marking the official discovery of Minamata disease.

More anniversaries:

@@ Line 13: / Line 13: @@
 {{*mp}} [[1707]] – Under the terms of the [[Acts of Union 1707|Acts of Union]]<!-Not bolded, tagged with {{refimprove}}->, the Kingdoms of [[Kingdom of England|England]] and [[Kingdom of Scotland|Scotland]] merged to form the '''[[Kingdom of Great Britain]]''', a single kingdom encompassing the entire island of [[Great Britain]] with a [[Parliament of Great Britain|single parliament]] and government based in [[Westminster]].
+{{*mp}} [[1840]] – The [[United Kingdom of Great Britain and Ireland]] first issued the '''[[Penny Black]]''', the first official adhesive [[postage stamp]].
 {{*mp}} [[1851]] – '''[[The Great Exhibition]]''', the first ever [[Expo (exhibition)|World's Fair]], opened in [[London]]'s [[Hyde Park, London|Hyde Park]].
 {{*mp}} [[1925]] – The '''[[All-China Federation of Trade Unions]]''', today the largest [[trade union]] in the world with over 130 million members, was founded.
@@ Line 23: / Line 24: @@
 </div>
 {{*mp}} [[1786]] – '''''[[The Marriage of Figaro]]''''', an [[opera buffa]] composed by [[Wolfgang Amadeus Mozart]], premiered at the [[Burgtheater]] in [[Vienna]].
-{{*mp}} [[1840]] – The [[United Kingdom of Great Britain and Ireland]] first issued the '''[[Penny Black]]''', the first official adhesive [[postage stamp]].
 {{*mp}} [[1885]] – The original '''[[Chicago Board of Trade Building]]''' opened for business.
 {{*mp}} [[1893]] – The '''[[World's Columbian Exposition]]''', a [[Expo (exhibition)|World's Fair]] to celebrate the 400th anniversary of [[Christopher Columbus]]' discovery of the [[New World]], opened in [[Chicago]].