Wikipedia:Selected anniversaries/December 15
This is a list of selected December 15 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, featured list 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.
- 1467 – Troops under Stephen III of Moldavia defeated the forces of Matthias Corvinus of Hungary in present-day Baia, Romania.
- 1791 – The first ten amendments to the United States Constitution, collectively known as the United States Bill of Rights, were ratified.
- 1868 – Tokugawa Shogunate forces led by Enomoto Takeaki (pictured) founded the Republic of Ezo in Hokkaidō, Japan's second largest island.
- 1964 – The six-month long Canadian Great Flag Debate ended when the Canadian House of Commons voted to replace the de facto national flag of Canada, the Canadian Red Ensign, with an official one, the current Maple Leaf Flag.
- 1965 – The first space rendezvous took place when NASA spacecraft Gemini 6A maneuvered within 30 centimeters (12 inches) of Gemini 7.