The vigil of this feast, on October 31, is popularly called "Hallowe'en" or "Halloween". The term Halloween is shortened from All Hallows' Even (both "even" and "eve" are abbreviations of "evening", but "Halloween" gets its "n" from "even") as it is the eve of "All Hallows' Day",which is now also known as All Saints' Day. It was a day of religious festivities in various northern European traditions,until Popes Gregory III and Gregory IV moved the old Christian feast of All Saints' Day to November 1.
The carved pumpkin, lit by a candle inside, is one of Halloween's most prominent symbols in America, and is commonly called a jack-o'-lantern. Originating in Europe, these lanterns were first carved from a turnip or rutabaga.
ALL SAINTS' DAY
All Saints' Dat is solemnly celebrated on the first of November. It is instituted to honour all the saints, known and unknown, and, according to Urban IV, to supply any deficiencies in the faithful's celebration of saints' feasts during the year.
In the early days the Christians were accustomed to solemnize the anniversary of a martyr's death for Christ at the place of martyrdom. In the fourth century, neighbouring dioceses began to interchange feasts, to transfer relics, to divide them, and to join in a common feast; as is shown by the invitation of St. Basil of Caesarea (397) to the bishops of the province of Pontus. Frequently groups of martyrs suffered on the same day, which naturally led to a joint commemoration. In the persecution of Diocletian the number of martyrs became so great that a separate day could not be assigned to each. But the Church, feeling that every martyr should be venerated, appointed a common day for all. The first trace of this we find in Antioch on the Sunday after Pentecost. We also find mention of a common day in a sermon of St. Ephrem the Syrian (373), and in the 74th homily of St. John Chrysostom (407). At first only martyrs and St. John the Baptist were honoured by a special day. Other saints were added gradually, and increased in number when a regular process of canonization was established; still, as early as 411 there is in the Chaldean Calendar a "Commemoratio Confessorum" for the Friday after Easter. In the West Boniface IV, 13 May, 609, or 610, consecrated the Pantheon in Rome to the Blessed Virgin and all the martyrs, ordering an anniversary. Gregory III (731-741) consecrated a chapel in the Basilica of St. Peter to all the saints and fixed the anniversary for 1 November. A basilica of the Apostles already existed in Rome, and its dedication was annually remembered on 1 May. Gregory IV (827-844) extended the celebration on 1 November to the entire Church. The vigil seems to have been held as early as the feast itself. The octave was added by Sixtus IV (1471-84).
ALL SOULS' DAY
The commemoration of all the faithful departed is celebrated by the Church on 2 November, or, if this be a Sunday or a solemnity, on 3 November. The Office of the Dead must be recited by the clergy and all the Masses are to be of Requiem, except one of the current feast, where this is of obligation.
The theological basis for the feast is the doctrine that the souls which, on departing from the body, are not perfectly cleansed from venial sins, or have not fully atoned for past transgressions, are debarred from the Beatific Vision, and that the faithful on earth can help them by prayers, almsdeeds and especially by the sacrifice of the Mass.