Please label these dates from least to greatest
20 May 1882
August 8, 1918
Aug 4, 1914
31 October 1914
September 3, 1939
22 April 1915
July 1, 1916
1914
September 6–12, 1914
July 28, 1914
28 June 1914
February 21, 1916
August 1, 1914
1906 and 1914
23 August 1914
August 3, 1914