Wikipedia:Selected anniversaries/September 3
This is a list of selected September 3 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.
September 3: Ghost Festival in the Chinese calendar (2009); Independence Day in Qatar; Flag Day in Australia; Armed Forces Day in Taiwan
- 301 – San Marino, one of the smallest nations in the world and the world's oldest republic still in existence, was founded by Saint Marinus.
- 1783 – Great Britain and the United States signed the Treaty of Paris, formally ending the American Revolutionary War.
- 1901 – The National Flag of Australia, a Blue Ensign defaced with the Commonwealth Star and the Southern Cross, flew for the first time atop the Royal Exhibition Building (pictured) in Melbourne.