|1856 November 22
||Born in Salt Lake City, Utah, to Jedediah Morgan Grant and Rachel Ridgeway Ivins.
|1856 December 1
||Age 9 days
||Father, Jedediah M. Grant-second counselor to Brigham Young and first mayor of Salt Lake City–died.
||Ordained to office of Seventy.
|1875 June 10
||Became a member of the superintendency of the first Young Men's Mutual Improvement Association initiated in a ward.
|1880 April 6
||Became secretary to the general superintendency of the first Young Men's Mutual Improvement Association.
|1880 October 30
||Called to preside over the Tooele Utah Stake.
|1882 October 16
||Ordained Apostle by George Q. Cannon.
||Visited communities of Native Americans and worked with Church leaders to call and set apart priesthood holders to labor among them.
|1896 January 4
||Utah received statehood; Heber J. Grant considered as candidate for the first governorship of the state.
||Became member of general superintendency of Young Men's Mutual Improvement Association; became business manager of the Improvement Era, which he helped found.
|1901 August 1–1903 September 8
||Organized and presided over Japanese Mission.
|1904 January 1–1906 December 5
||Served as president of British and European Missions.
|1916 November 23
||Became President of the Quorum of the Twelve Apostles.
|1918 November 23
||Became President of the Church.
|1919 November 27
||Dedicated Laie Hawaii Temple.
|1923 August 26
||Dedicated Cardston Alberta Temple.
|1924 October 23
||Spoke on first radio broadcast of general conference.
||First organized training for missionaries held.
|1927 October 23
||Dedicated Mesa Arizona Temple.
|1929 July 15
||Tabernacle Choir began weekly network radio broadcasts.
|1933 June 1
||Church-sponsored exhibit at Chicago's World Fair.
||Church Security Plan (later changed to Church Welfare Program) began.
||Church European tour of Great Britain and western Europe.
|1939 February 18
||Church-sponsored exhibit at San Francisco's World Fair.
|1945 May 14
||Died in Salt Lake City, Utah.