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This is a list of selected March 20 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
March equinox (21:58 UTC, 2019) twelve citation-needed tags
; Independence Day in Tunisia (1956) refimprove section
235Maximinus Thrax acceded to the throne of the Roman Empire as a so-called barracks emperor, who gained power by virtue of his command of the army. Date not in article
1600 – Five advisers to Polish–Swedish king Sigismund III Vasa were publicly executed, effectively ending his reign in Sweden. unreferenced section
1602 – The Dutch East India Company—the first company to issue stock, one of the first multinational corporations, and possibly the first megacorporation—was established. multiple issues
1815 – After escaping from exile in Elba, Napoleon entered Paris, beginning the period known as the Hundred Days. Tagged for lack of citations
1848 – Due to the European Revolutions, King Ludwig I of Bavaria abdicated in favour of his son, Maximilian. refimprove
1854 – The Republican Party was founded in Ripon, Wisconsin, by politicians opposing the Kansas–Nebraska Act and the expansion of slavery in the United States. Neutrality disputed banner
1883 – Eleven countries signed the Paris Convention for the Protection of Industrial Property, one of the first intellectual-property treaties. Too much uncited
Number landing not cited
1995 – The Aum Shinrikyo sect carried out a poison gas attack on the Tokyo subway, killing 12 people and injuring thousands of others with sarin. refimprove
2003 – A U.S.-led coalition force invaded Iraq, beginning the Iraq War. globalize
2006Cyclone Larry made landfall in Far North Queensland, eventually causing nearly AU$1 billion in total damage and destroying over 80 percent of Australia's banana crop. refimprove section
Ai Ogawa |d|2010 refimprove section

Eligible

Notes

  • Napoleon's escape from Elba appears on February 26 so Hundred Days should not appear in the same year

March 20

Chemical structure of zidovudine
Chemical structure of zidovudine
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