Christmas Eve (Eastern churches)

Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus. Christmas Day is observed around the world, and Christmas Eve is widely observed as a full or partial holiday in anticipation of Christmas Day. Together, both days are considered one of the most culturally significant celebrations in Christendom and Western society.

Christmas celebrations in the denominations of Western Christianity have long begun on Christmas Eve, due in part to the Christian liturgical day starting at sunset, a practice inherited from Jewish tradition and based on the story of Creation in the Book of Genesis: "And there was evening, and there was morning – the first day". Many churches still ring their church bells and hold prayers in the evening; for example, the Nordic Lutheran churches. Since tradition holds that Jesus was born at night (based in Luke 2:6-8), Midnight Mass is celebrated on Christmas Eve, traditionally at midnight, in commemoration of his birth. The idea of Jesus being born at night is reflected in the fact that Christmas Eve is referred to as Heilige Nacht (Holy Night) in German, Nochebuena (the Good Night) in Spanish and similarly in other expressions of Christmas spirituality, such as the song "Silent Night, Holy Night".

Many other varying cultural traditions and experiences are also associated with Christmas Eve around the world, including the gathering of family and friends, the singing of Christmas carols, the illumination and enjoyment of Christmas lights, trees, and other decorations, the wrapping, exchange and opening of gifts, and general preparation for Christmas Day. Legendary Christmas gift-bearing figures including Santa Claus, Father Christmas, Christkind, and Saint Nicholas are also often said to depart for their annual journey to deliver presents to children around the world on Christmas Eve, although until the Protestant introduction of Christkind in 16th-century Europe, such figures were said to instead deliver presents on the eve of Saint Nicholas' feast day (6 December).

In the Byzantine Rite, Christmas Eve is referred to as Paramony ("preparation"). It is the concluding day of the Nativity Fast and is observed as a day of strict fasting by those devout Byzantine Christians who are physically capable of doing so. In some traditions, nothing is eaten until the first star appears in the evening sky, in commemoration of the Star of Bethlehem. The liturgical celebration begins earlier in the day with the celebration of the Royal Hours, followed by the Divine Liturgy combined with the celebration of Vespers, during which a large number of passages from the Old Testament are chanted, recounting the history of salvation. After the dismissal at the end of the service, a new candle is brought out into the center of the church and lit, and all gather round and sing the Troparion and Kontakion of the Feast.

In the evening, the All-Night Vigil for the Feast of the Nativity is composed of Great Compline, Matins and the First Hour. The Byzantine services of Christmas Eve are intentionally parallel to those of Good Friday, illustrating the theological point that the purpose of the Incarnation was to make possible the Crucifixion and Resurrection. This is illustrated in Eastern icons of the Nativity, on which the Christ Child is wrapped in swaddling clothes reminiscent of his burial wrappings. The child is also shown lying on a stone, representing the Tomb of Christ, rather than a manger. The Cave of the Nativity is also a reminder of the cave in which Jesus was buried.

The services of Christmas Eve are also similar to those of the Eve of Theophany (Epiphany), and the two Great Feasts are considered one celebration.

In some Orthodox cultures, after the Vesperal Liturgy the family returns home to a festive meal, but one at which Orthodox fasting rules are still observed: no meat or dairy products (milk, cheese, eggs, etc.) are consumed (see below for variations according to nationality). Then they return to the church for the All-Night Vigil.

The next morning, Christmas Day, the Divine Liturgy is celebrated again, but with special features that occur only on Great Feasts of the Lord. After the dismissal of this Liturgy, the faithful customarily greet each other with the kiss of peace and the words: "Christ is Born!", to which the one being greeted responds: "Glorify Him!" (the opening words of the Canon of the Nativity that was chanted the night before during the Vigil). This greeting, together with many of the hymns of the feast, continue to be used until the leave-taking of the feast on 29 December.

The first three days of the feast are particularly solemn. The second day is known as the Synaxis of the Theotokos, and commemorates the role of the Virgin Mary in the Nativity of Jesus. The third day is referred to simply as "the Third Day of the Nativity". The Saturday and Sunday following 25 December have special Epistle and Gospel readings assigned to them. 29 December celebrates the Holy Innocents.

Byzantine Christians observe a festal period of twelve days, during which no one in the Church fasts, even on Wednesdays and Fridays, which are normal fasting days throughout the rest of the year. During this time one feast leads into another: 25–31 December is the afterfeast of the Nativity; 2–5 January is the forefeast of the Epiphany.