Timing the timeline

Events

7/01/1867
August 7th 1867
1869
1869
1870
July 20th 1871
August 1871
1872
July 20 1872
July 1st 1873
January 22 1874
March 3, 1875
September 17 1878
June 20 1882
1884
July 20th 1885
February 22 1887