Answer:
Order them according to year, then month, then day:
20 May 1882
1906 and 1914
1914
28 June 1914
July 28, 1914
August 1, 1914
August 3, 1914
Aug 4, 1914
23 August 1914
September 6–12, 1914
31 October 1914
22 April 1915
February 21, 1916
July 1, 1916
August 8, 1918
September 3, 1939
