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			June 30 
 
1688 – The Immortal Seven issue the Invitation to William (continuing the English rebellion from Rome), which would culminate in the Glorious Revolution. 
 
1859 – French acrobat Charles Blondin crosses Niagara Falls on a tightrope. 
 
1860 – The 1860 Oxford evolution debate at the Oxford University Museum of Natural History takes place. 
 
1905 – Albert Einstein publishes the article On the Electrodynamics of Moving Bodies, in which he introduces special relativity. 
 
1908 – The Tunguska event occurs in remote Siberia. 
 
1934 – The Night of the Long Knives, Adolf Hitler's violent purge of his political rivals in Germany, takes place. 
 
1997 – The United Kingdom transfers sovereignty over Hong Kong to the People's Republic of China. 
 
(source:wikipedia)
		 
		
	
		
		
		
		
		
		
		
		
		
		
	
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