Holy Week by some parishes of the Roman Rite of the Catholic Church, of the Polish National Catholic Church, of Anglicanism, of other Protestant churches such as Lutheranism, and of Western Rite Orthodoxy within the Eastern Orthodox Church. In the Catholic Church, "tenebrae" is the name given to the celebration, with special ceremonies, of Matins and Lauds, the first two hours of the Liturgy of the Hours, of the last three days of Holy Week. Maundy Thursday (also known as Holy Thursday) commemorates the Last Supper, where Christ lays out the model for the Eucharist or Holy Communion. During the meal, Jesus
Holy Week "Great and Holy Week", or "Passion Week". Since the Orthodox liturgical day starts at sunset (as it has from antiquity), Holy Monday services begin Sunday evening, at the normal timing for Monday Vespers (Vespers is the first service of the day). However, during Holy Week, in most parishes, many service times are advanced from six to twelve hours in time and celebrated in anticipation, which permits more of the faithful to attend the most prominent services. Thus, it is the matins service of Great Monday that is on "Palm Sunday" evening in parish churches and often vespers is in the