Wikipedia:Selected anniversaries/June 30
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This is a list of selected June 30 anniversaries that appears on 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 may be controversial, or on a day that is or soon will be on the Main Page, please post your suggestion on the talk page instead.
To report an error when this appears on the Main Page, see Main Page errors.June 30: Independence Day in the Democratic Republic of the Congo (1960)
- 1864 – U.S. National Parks: U.S. President Abraham Lincoln granted Yosemite Valley and the Mariposa Grove of Giant Sequoias to California for "public use, resort, and recreation".
- 1894 – London's Tower Bridge, a combined bascule and suspension bridge, opened.
- 1905 – Albert Einstein (pictured) published the article "On the Electrodynamics of Moving Bodies" and introduced the theory of special relativity.
- 1908 – The Tunguska impact event occurred in Siberia, felling an estimated 80 million trees.
- 1971 – The Soyuz 11 spacecraft depressurised during reentry, killing cosmonauts Vladislav Volkov, Georgiy Dobrovolskiy and Viktor Patsayev.
- 1997 – During an internationally televised ceremony at 16:00 UTC (00:00, July 1 HKT), the United Kingdom officially transferred sovereignty of Hong Kong to the People's Republic of China.