– World Humanitarian Day.
– World Photography Day.
– National Day of Afghanistan: Independence Day (from UK control over Afghan foreign affairs in 1919).
On this date in Bulgarian history:
1892: Second Lieutenant Vassil Zlatarov ascends in Eugene Godard’s hot-air balloon La France above First Universal Agricultural and Industrial Exposition in Plovdiv, pioneering Bulgarian aviation.
1899: Bulgarian Apiarists’ Union is established.
1963: Radio Deutsche Welle begins Bulgarian-language broadcasts (discontinued July 1, 2011).