Christian feast day: Henry Muhlenberg (some Lutheran Churches, Episcopal Church of the USA)

Henry Melchior Muhlenberg, was a German-born Lutheran clergyman and missionary. Born in Einbeck, Muhlenberg immigrated to the Province of Pennsylvania in response to demands from Lutherans for missionary work in the colony. Muhlenberg was integral to the founding of the first Lutheran church body or denomination in North America, and is considered the patriarch of the Lutheran Church in the United States.

Lutheranism is a major branch of Protestantism that emerged under the work of Martin Luther, the 16th-century German friar and reformer whose efforts to reform the theology and practices of the Catholic Church launched the Reformation in 1517. The Lutheran Churches adhere to the Bible and the Ecumenical Creeds, with Lutheran doctrine being explicated in the Book of Concord. Lutherans hold themselves to be in continuity with the apostolic church and affirm the writings of the Church Fathers and the first four ecumenical councils.

The Calendar of the Church Year is the liturgical calendar of the United States Episcopal Church. It is found in the 1979 Book of Common Prayer and in Lesser Feasts and Fasts, with additions made at recent General Conventions.