Q:Information:  - All Saints' Day, also known as All Hallows' Day, Hallowmas, Feast of All Saints, or Solemnity of All Saints, is a Christian festival celebrated in honour of all the saints, known and unknown. In Western Christianity, it is celebrated on 1 November by the Roman Catholic Church, the Anglican Communion, the Methodist Church, the Lutheran Church, and other Protestant churches. The Eastern Orthodox Church and associated Eastern Catholic churches celebrate it on the first Sunday after Pentecost. Oriental Orthodox churches of Chaldea and associated Eastern Catholic churches celebrate All Saints' Day on the first Friday after Easter.  - Allhallowtide, Hallowtide, Allsaintstide, or the Hallowmas season, is the triduum encompassing the Western Christian observances of All Saints' Eve (Halloween), All Saints' Day (All Hallows') and All Souls' Day, which last from October 31 to November 2 annually. Allhallowtide is a "time to remember the dead, including martyrs, saints, and all faithful departed Christians." The present date of Hallowmas (All Saints' Day) and thus also of its vigil (Hallowe'en) was established for Rome perhaps by Pope Gregory III (731741) and was made of obligation throughout the Frankish Empire by Louis the Pious in 835. Elsewhere, other dates were observed even later, with the date in Ireland being 20 April. In the early 11th century, the modern date of All Souls' Day was popularized, after Abbot Odilo established it as a day for the monks of Cluny and associated monasteries to pray for the dead.  - Halloween , or Hallowe'en ( / hælwin , - oin , hl - / ; a contraction of All Hallows '' Evening ) , also known as Allhalloween , All Hallows ' Eve , or All Saints ' Eve , is a celebration observed in a number of countries on 31 October , the eve of the Western Christian feast of All Hallows ' Day . It begins the three - day observance of Allhallowtide , the time in the liturgical year dedicated to remembering the dead , including saints ( hallows ) , martyrs , and all the faithful departed . According to BBC Online , it is `` widely believed '' that many Halloween traditions originated from the ancient Celtic harvest festival Samhain , and that this Gaelic observance was Christianized by the early Church . Samhain and other such festivals may have also had pagan roots . Some , however , support the view that Halloween began independently of Samhain and has solely Christian roots . Halloween activities include trick - or - treating ( or the related guising ) , attending Halloween costume parties , decorating , carving pumpkins into jack - o ' - lanterns , lighting bonfires , apple bobbing and divination games , playing pranks , visiting haunted attractions , telling scary stories and watching horror films . In many parts of the world , the Christian religious observances of All Hallows ' Eve , including attending church services and lighting candles on the graves of the dead , remain popular , although elsewhere it is a more commercial and secular celebration . Some Christians historically abstained from meat on All Hallows ' Eve , a tradition reflected in the eating of certain foods on this vigil day , including apples , colcannon , potato pancakes and soul cakes .    Given the information above, choose from the list below the object entity that exhibits the relation 'day in year for periodic occurrence' with the subject 'halloween'.  Choices: - easter  - october 31
A:
october 31