Wikipedia:Selected anniversaries/July 20
This is a list of selected July 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.
July 20: Marine Day in Japan (2009); Friends' Day in Argentina and other Latin American countries; Independence Day in Colombia
- 1656 – Led by King Charles X Gustav, the armies of Sweden and Brandenburg defeated the forces of the Polish–Lithuanian Commonwealth near Warsaw.
- 1927 – Five-year-old Michael I became King of Romania upon the death of his grandfather Ferdinand I.
- 1944 – Adolf Hitler survived an assassination attempt by German Resistance member Claus von Stauffenberg, who hid a bomb inside a briefcase during a conference at the Wolfsschanze military headquarters in East Prussia.
- 1951 – Abdullah I of Jordan was assassinated by a Palestinian from the Husseini clan while visiting Al-Aqsa Mosque in Jerusalem.
- 1969 – The Apollo 11 lunar module landed on the Sea of Tranquillity, where Neil Armstrong and Buzz Aldrin (pictured) became the first men to walk on the moon six-and-a-half hours later.