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This is a list of selected May 18 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.

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Ineligible

Blurb Reason
Armed Forces Day in the United States (2013) refimprove
1268Baibars and his Mamluk forces captured Antioch, capital of the crusader state, the Principality of Antioch. needs more footnotes
1848 – During the aftermath of the March Revolution in the German Confederation, the Frankfurt Parliament opened in Paulskirche, Frankfurt. needs more footnotes
1944World War II: Polish forces under Lieutenant General Władysław Anders captured Monte Cassino, Italy, after a four-month battle. inappropriate tone, refimprove section
1948 – The first session of the Legislative Yuan of the Republic of China convened in the then-Chinese capital of Nanjing. refimprove section
1953 – At Rogers Dry Lake, California, in her Canadair Sabre, American Jackie Cochran became the first female pilot to break the sound barrier. refimprove section
1980A popular uprising against the nationwide martial law imposed by South Korean President Chun Doo-hwan's government began in Gwangju, but it was ultimately crushed by the army about nine days later. unreferenced section
1991 – Following the collapse of central government during the Somali Civil War, the Somali National Movement declared the independence of Somaliland (flag pictured), an internationally unrecognized de facto sovereign state. refimprove sections
Alexander Suvorov |d|1800 inappropriate tone
Charles Vane, 3rd Marquess of Londonderry |b|1778 lots of CN tags (12)
* 1980Mount St. Helens explosively erupted, killing approximately 57 people in southern Washington state, reducing hundreds of square miles to wasteland, and causing more than US$1 billion in damage. Tagged as misleading

Eligible

Notes

May 18: Haitian Flag Day in Haiti (1803); Day of Remembrance for the Victims of Crimean Tatar Genocide in Ukraine

The Bath School after the explosions
The Bath School after the explosions
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