The Lutheran liturgical calendar is a listing which details the primary annual festivals and events that are celebrated liturgically by various Lutheran churches. The calendars of the Evangelical Lutheran Church in America (ELCA) and the Evangelical Lutheran Church in Canada (ELCIC) are from the 1978 "Lutheran Book of Worship" and the calendar of Lutheran Church–Missouri Synod (LCMS) and the Lutheran Church - Canada use the "Lutheran Book of Worship" and the 1982 "Lutheran Worship". Elements unique to the ELCA have been updated from the "Lutheran Book of Worship" to reflect changes resulting from the publication of "Evangelical Lutheran Worship" in 2006. The elements of the calendar unique to the LCMS have also been updated from "Lutheran Worship" and the "Lutheran Book of Worship" to reflect the 2006 publication of the "Lutheran Service Book".