All Souls' Day, also called The Commemoration of All the Faithful Departed, is a day of prayer and remembrance for the faithful departed, observed by certain Christian denominations on 2 November. Through prayer, intercessions, alms and visits to cemeteries, people commemorate the poor souls in purgatory and gain them indulgences. In Western Christianity, including the Roman Catholicism and certain parts of Lutheranism and Anglicanism, All Souls' Day is the third day of Allhallowtide, after All Saints' Day (1 November) and All Hallows' Eve (October 31). Before the standardization of Western Christian observance on 2 November by St. Odilo of Cluny in the 10th century, many Catholic congregations celebrated All Souls Day on various dates during the Easter season as it is still observed in some Eastern Orthodox Church, Eastern Catholic and Eastern Lutheran churches. Churches of the East Syriac Rite (Syro-Malabar Catholic Church, Chaldean Catholic Church, Assyrian Church of the East, Ancient Church of the East) commemorate all the faithful departed on the Friday before Lent. From Wikipedia