Wikipedia:Selected anniversaries/September 20
This is a list of selected September 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. Before doing so, please review the selected anniversaries guidelines. If your suggestion is potentially controversial or relates to a day currently or soon to appear on the Main Page, post it on the talk page instead.
Please note:
- Events listed on the Main Page are selected based on article quality and to provide a diverse range of topics, rather than solely on the importance or significance of the events.
- Only four or five events are featured each day; therefore, not all important or significant events can be included.
- An event is generally excluded if it is already the subject of the scheduled featured article, featured list or picture of the day.
To report an error in content currently on the Main Page, see Wikipedia:Main Page/Errors. If a listed event is inaccurate, please first seek consensus and update the corresponding article before making changes here.
September 20: Oktoberfest begins in Munich (2008); Feast Day of the Korean Martyrs (Roman Catholic Church)
- 1378 – Papal Schism: Unhappy with Pope Urban VI (pictured), a group of cardinals started a rival papacy with the election of Antipope Clement VII, throwing the Roman Catholic Church into turmoil.
- 1596 – An expedition of twelve families led by Diego de Montemayor founded Monterrey in New Spain.
- 1854 – The Crimean War began with a Franco-British victory over Russian forces at the Battle of Alma near the River Alma in Crimea.
- 1870 – The Bersaglieri entered Rome, ending the temporal power of the Pope and completing the unification of Italy.
- 1973 – Billie Jean King defeated Bobby Riggs in straight sets before 30,492 spectators at the Astrodome in Houston, Texas in an internationally televised tennis match dubbed "The Battle of the Sexes".
More anniversaries: