" 
 Google search results: 
 * ""founded 1 June"": about 105,000 results 
 Most of these results are not sentences with ""founded 1 June YYYY"", but many are, including some very British examples. 
 * Wikipedia's article on Neue Rheinische Zeitung: The Neue Rheinische Zeitung: Organ der Demokratie (""New Rhenish Newspaper: Organ of Democracy"") was founded 1 June 1848 in Cologne (Köln), part of Rhineland. 
 *  
 *  
 *  
 *  
 *  

 So I still don't think it's wrong to say ""the Meimad movement was founded 1 June 1988 ..."" in any variety of English. —  "