Day, Jeremiah a Congregational minister, was born at Colchester, Connecticut, January 25 (O.S.), 1737. He graduated from Yale College in 1756; taught a school in Sharon until December 1, 1757, when he began the study of theology with the Reverend Dr. Joseph Bellamy; after a year and a half taught school again about two years in Esopus, N.Y.; settled on a farm on Sharon mountain, still continuing his studies; and in 1766 and 1767 was representative in the General Assembly. Not long after, he resumed his theological studies under the Reverend Cotton Mather Smith, and, after preaching at Danbury and other places, was ordained pastor at New Preston, January 31, 1770. In the fall of 1788 he made a missionary tour through western Vermont. In 1794 he made another tour, this time to the settlements on the Delaware, in the state of New York, and on the Susquehanna, in Pennsylvania. From the establishment of the Connecticut Evangelical Magazine, in 1800, he was one of the editors until the close of his life, at Sharon, September 12, 1806. See Sprague, Annals of the Amer. Pulpit, 1:688.