September 21, 1823 – Joseph Smith, jun., while engaged in earnest prayer in his father’s house in Manchester, near Palmyra, N. Y., saw the room in which he had retired for the night filled with light surpassing that of noonday, in the midst of which stood a person dressed in white, whose countenance was as lightning, and yet full of innocence and goodness. This was the angel Moroni, who informed Joseph that God had a work for him (Joseph) to do, and that his “name should be had for good and evil among all nations.” The angel quoted many passages of Scripture, and told Joseph that the native inhabitants of America were a remnant of Israel who had anciently enjoyed the ministry of inspired men, that records engraved on plates of gold, containing their history and also the fulness of the everlasting Gospel had been preserved and were buried in a neighboring hill. While conversing with the angel, a vision was opened to Joseph’s view, so that he could see the place where the plates were deposited, and he was told by the angel that he should obtain them at some future day, if he was faithful. After imparting many instructions, the angel disappeared, but returned twice during the night, and repeated what he had said on his first visit; he also gave further instructions.
Sept 16, 1840 – First apostle arrives in the Isle of Man (John Taylor).
September 1856– Cache County was settled by Peter Maughan and others, who located what is now the town of Wellsville.
September 16, 1855 – The Horticultural Society was organized in G.S.L. City, with Wilford Woodruff as president. Various other societies were organized in the forepart of the year, among which were the “Universal Scientific Society”, the “Polysophical Society”, the Deseret Philharmonic Society and the “Deseret Typographical Association.”
Taken from Church Chronology, Andrew Jenson