WikiRug:Selected anniversaries/October 20

This is a list of selected October 20 anniversaries that appears on 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 soon will 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 five to six events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is not generally posted this year if it is also the subject of the scheduled [[WikiRug:Today's featured article/Template:SelAnnivTalk CalculateAppropriateYear|Template:SelAnnivTalk CalculateAppropriateYear featured article]] or the [[Template:POTD/Error: Invalid time.|Template:SelAnnivTalk CalculateAppropriateYear featured picture]].

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.

< October 19	October 21 >

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Images

Use only ONE image at a time

Douglas MacArthur and staff arrive at Leyte
Maria Theresa of Austria
Monument to the R-13 missile
Naval Battle of Navarino by Garneray
Sydney Opera House
Muammar Gaddafi

Ineligible

Blurb	Reason
1572 – Eighty Years' War: Soldiers of the Spanish Tercios waded across the river Scheldt at its mouth, walking overnight in water to chest height, to relieve the siege of Goes in the Spanish Netherlands.	needs more footnotes
1818 – The United Kingdom and the United States signed the Treaty of 1818, which settled the Canada–United States border on the 49th parallel between the Rocky Mountains and Lake of the Woods.	refimprove section
1827 – An allied British, French, and Russian naval force destroyed a combined Ottoman and Egyptian fleet at the Battle of Navarino, a decisive moment in the Greek War of Independence.	refimprove sections
1883 – Peru and Chile signed the Treaty of Ancón, ending Peru's involvement in the War of the Pacific.	War featured on March 23; Treaty is unreferenced stub
1961 – The Soviet Union performed the first armed test of a submarine-launched ballistic missile, launching an R-13 from a Golf-class submarine.	refimprove section
1973 – Elizabeth II, in her capacity as Queen of Australia, formally opened the Sydney Opera House on Bennelong Point in Sydney Harbour.	refimprove section
1991 – An urban fire killed 25 people, injured 150 others, and destroyed over 3,000 homes in the cities of Berkeley and Oakland, California.	refimprove section

Eligible

1939 – Pope Pius XII published his first major encyclical, Summi Pontificatus, which was seen as setting a tone for his papacy.
1951 – African-American college football player Johnny Bright was the victim of an on-field assault that eventually provoked changes in NCAA football rules and mandated the use of more protective helmets with face guards.
1967 – Roger Patterson and Robert Gimlin filmed an unidentified subject at Six Rivers National Forest in California who they claimed was a Bigfoot.
1977 – Three members of the American rock band Lynyrd Skynyrd died when their chartered plane crashed in Gillsburg, Mississippi.
1986 – Aeroflot Flight 6502 crashed on approach to Kurumoch Airport in Samara (then Kuibyshev in the Soviet Union), killing 70 people on board.
1991 – The Uttarkashi earthquake struck the Indian state of Uttarakhand, killing at least 768 people and destroying thousands of homes.
Born/died: Ralph d'Escures (d. 1122) · Simon de Vos (b. 1603) · Jean Keene (b. 1923)