This is a list of selected June 30 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 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.
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Ernst Röhm
Albert Einstein, c. 1947
Henry II of France- Trees felled by the Tunguska explosion
Charles Blondin crossing Niagara Gorge
Ineligible
| Independence Day in the Democratic Republic of the Congo (1960) | refimprove section |
| 1651 – Khmelnytsky Uprising: Ukrainian Cossacks and their Crimean Tatar allies were annihilated by a Polish–Lithuanian Commonwealth army in the Battle of Berestechko, probably the largest land battle in the 17th century. | appears on June 28 |
| 1758 – Seven Years' War: Austria defeated Prussia at the Battle of Domstadtl, forcing Frederick the Great to leave Moravia. | no footnotes |
| 1905 – The scientific journal Annalen der Physik published Albert Einstein's article "On the Electrodynamics of Moving Bodies", the third of his Annus Mirabilis papers, introducing the theory of special relativity. | refimprove section |
| 1972 – The International Time Bureau added the first leap second to the Coordinated Universal Time time scale. | refimprove section |
| 1987 – The Royal Canadian Mint introduced the Canadian one-dollar coin, commonly known as the loonie. | refimprove |
| 2007 – In an attempted terrorist attack, a car loaded with propane canisters was driven into the terminal of Scotland's Glasgow International Airport and set ablaze. | refimprove section |
Eligible
- 1559 – During a jousting match, King Henry II of France was mortally wounded when fragments of Gabriel Montgomery's lance pierced his eye.
- 1859 – French acrobat Charles Blondin crossed Niagara Gorge, making him one of the world's most famous tightrope walkers.
- 1908 – A massive explosion, generally attributed to a meteor air burst, occurred near the Podkamennaya Tunguska river in Siberia, flattening more than 2,150 km2 (830 sq mi) of forest.
- 1934 – German chancellor Adolf Hitler began a purge of the SA, the Nazi Party's paramilitary wing, and other political rivals in the Night of the Long Knives, executing at least 85 people.
- 1963 – A car bomb intended for Mafia boss Salvatore Greco killed seven police and military officers near Palermo, Sicily.
- 1966 – The National Organization for Women, a leading United States feminist organization, was founded in Washington, D.C.
- 1974 – Municipal workers in Baltimore, Maryland, went on strike seeking higher wages and better conditions.
- 1985 – Ryan White, a poster child for HIV/AIDS in the U.S., was denied re-admission to his school, having developed the disease due to treatment for hemophilia.
- 2009 – Yemenia Flight 626 crashed into the Indian Ocean near the Comoros, killing 152 people, with French schoolgirl Bahia Bakari the sole survivor.
- Born/died: | Æthelred |d|888| John Quelch |d|1704| Frederick Bligh Bond |b|1864| Alberto Henschel |d|1882| María Luisa Dehesa Gómez Farías |b|1912| Eunice Gibbs Allyn |d|1916| Assia Djebar |b|1936| Terri Lynn Land |b|1958| Nancy Mitford |d|1973| Allegra Versace |b|1986| Chris Gragg |b|1990| Margaret |b|1991| Abdur Razzaq Iskander |d|2021
Notes
- Alfred Russel Wallace appears on June 18, so 1860 Oxford evolution debate should not appear in the same year
Tower Bridge, London
- 1860 – Seven months after the publication of Charles Darwin's On the Origin of Species, prominent British scientists and philosophers participated in an evolution debate at the Oxford University Museum of Natural History.
- 1894 – London's Tower Bridge (pictured), a combined bascule and suspension bridge over the River Thames, was inaugurated.
- 1922 – An agreement was signed to end the United States occupation of the Dominican Republic.
- 1960 – The Belgian Congo gained independence from colonial rule, beginning a period of instability that would lead to the dictatorship of Joseph-Désiré Mobutu.
- 2015 – An Indonesian Air Force military transport aircraft crashed near a residential neighborhood in Medan, killing 139 people.
- William Oughtred (d. 1660)
- Eleanor Sophia Smith (d. 1942)
- Tony Fernández (b. 1962)