This is a list of selected June 23 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 listorpicture 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.
Use only ONE image at a time
| Blurb | Reason |
|---|---|
| St John's Day and Victory Day in Estonia | both: refimprove |
| Jāņi in Latvia; | refimprove |
| Saint Jonas' Festival in Lithuania; | tagged as stub |
| 1713 – After Queen Anne's War, French residents of Acadia were given one year to declare allegiance to Britain or leave Nova Scotia. | refimprove section |
| 1757 – Seven Years' War: British forces under Robert Clive defeated troops under Siraj ud-Daulah at the Battle of Plassey, allowing the British East India Company to annex Bengal. | unreferenced section |
| 1780 – American Revolutionary War: The Continental Army defeated British and Hessian troops at the Battle of Springfield, effectively ending British ambitions in New Jersey. | lots of cns |
| 1817 – The Articles of Association of the Bank of Montreal, Canada's oldest chartered bank, were adopted. | refimprove |
| 1858 – Edgardo Mortara, a six-year-old Jewish boy, was seized by papal authorities and taken to be raised as a Roman Catholic, sparking an international controversy. | neutrality issues |
| 1919 – Estonian War of Independence: Estonian troops engaged the forces of the Pro-German Government of Latvia near Cēsis, Latvia, recapturing the area four days later. | unreferenced section |
| 1961 – The Antarctic Treaty, which sets aside Antarctica as a scientific preserve and bans military activity on the continent, came into force. | already featured on December 1 |
| 1972 – More than forty countries left the sterling area, allowing their currencies to float independently of the British pound. | refimprove, date/fact not in article |
| Margaret of Denmark, Queen of Scotland |b|1456| | refimprove |
| Huda Sha'arawi |b|1879| | Date not cited |
| Mana Ashida|b|2004 | Date not cited |
June 23: Grand Duke's Official Birthday in Luxembourg
