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
Christian observances of Jewish holidays the week). However, Karaite Jews celebrate this holy day according to Scriptural mandate on the day after the Sabbath. This Sunday celebration, in Christian tradition, is calculated as 50 days after Easter (inclusive of Easter Day). In other words, it falls on the eighth Sunday, counting Easter Day. Pentecost celebrates the birth of the Church, when thousands of Jews were in Jerusalem to celebrate Shavuot, and heard Peter and the disciples speaking in their own language. However, Shavuot is one of the Three Pilgrimage Festivals laid out for the Torah observant Jews, which was the reason for the huge gathering