Maundy Thursday of Psalm 21/22, a practice which continues in many Anglican churches. In other Christian denominations, such as the Lutheran Church or Methodist Church, the stripping of the altar and other items on the chancel also occurs, as a preparation for the somber Good Friday service. The Chrism Mass is a religious service held in Roman Catholicism, Lutheranism and Anglicanism. Maundy Thursday is notable for being the day on which the Chrism Mass is celebrated in each diocese. The Chrism Mass is one of the most solemn and important liturgies of the liturgical year. Usually held in the diocesean cathedral, it
Armelin's calendar mind of modest ability will learn in a few minutes the weekday with which each month invariably begins, and will be able to compute quickly the day of the week upon which any day of any month falls. Each stated holiday falls upon its invariable day of the week. Thanksgiving Day falls always on November 30. A major disadvantage is for sabbatarians, who are obliged to worship every seventh day. Their holy day will occur on a different weekday every year. Armelin's project received the first premium of the French Astronomical Society. The World Calendar, roughly identical, has been promoted