The Nativity Fast is the last of the four great Orthodox fasts in the liturgical year — and perhaps the most countercultural. Forty days of strict fasting, from November 15 to December 24, begin precisely when the English-speaking world plunges into the season of Christmas parties, holiday shopping, eggnog and office celebrations. Where the surrounding culture invites abundance and festivity, the Orthodox Church invites sobriety and waiting. This paradox is not a calendar error — it is at the heart of the spirituality of the Nativity Fast: to prepare for the birth of Christ as one prepares for Pascha, with the same seriousness, the same forty days, the same conviction that great joy deserves great preparation.
For Orthodox Christians in the English-speaking world — Americans, Canadians, Britons, Australians, whether lifelong faithful or recent converts — the Nativity Fast is often the most practically challenging of the four great fasts. It falls during the most commercially and socially saturated season of the year. It lacks the intense communal liturgical atmosphere of Great Lent. And it calls for a way of living December that is almost entirely at odds with the culture around it. This guide presents it in full: its fixed dates, its two-phase structure, its progressive fasting rules, the great feasts that punctuate it, its theological meaning and the particular experience of keeping it in the English-speaking world.
Table of contents
- Dates and structure of the Nativity Fast
- Historical origins: the Philippian Fast
- Theological meaning: preparing for the Incarnation
- The feasts within the fast
- The fasting rules in detail: a progressive fast
- December 25: the Nativity of Christ
- The Nativity Fast in the English-speaking world
- FAQ — Frequently asked questions about the Nativity Fast
Dates and structure of the Nativity Fast
The Nativity Fast is one of the two fixed great fasts of the Orthodox year — its dates never change. It always begins on November 15, the day after the feast of the Apostle Philip, and ends on the evening of December 24, the eve of the Nativity of Christ.
| Calendar | Fast begins | Fast ends | Feast of the Nativity | Duration |
|---|---|---|---|---|
| Revised Julian calendar (Greek, Romanian, Antiochian…) |
November 15 | Evening of December 24 | December 25 | 40 days |
| Julian calendar (Russian, Serbian, Georgian…) |
November 28 (Gregorian) | Evening of January 6 (Gregorian) | January 7 (Gregorian) | 40 days |
The Nativity Fast is structured in two distinct phases with different fasting rules:
- First phase (November 15 – December 19): moderate rules — fish is permitted on several days of the week
- Second phase (December 20 – 24): rules approaching Great Lent — fish is no longer permitted
This pedagogical progression expresses the movement of the entire liturgy: the closer one approaches the mystery of the Incarnation, the more intense the preparation becomes.
Historical origins: the Philippian Fast
The Nativity Fast is one of the fasts whose historical origins are best documented. It is attested as early as the 4th century in the writings of Saint Ambrose of Milan and Saint Philaster of Brescia — evidence that a preparatory fast before the Nativity existed in both East and West from the earliest centuries of Christianity, long before the separation of the churches.
Why forty days?
The forty-day duration is not arbitrary — it is a number deeply rooted in Scripture: the forty days of Moses on Sinai, the forty days of Elijah in the desert, Christ's forty days of fasting before His ministry. Forty days of fasting before the Nativity mean that the coming of the Son of God into the world deserves the same interior preparation as His Resurrection. The Nativity is not a lesser feast than Pascha — it is its inseparable complement: one celebrates the entry of the Son of God into the world; the other His entry into glory.
The Philippian Fast (Filippov Post)
In the Slavic tradition — Russian, Serbian, Bulgarian, Ukrainian — this fast is commonly called the Filippov Post (Philip's Fast), because it begins the day after the feast of the Apostle Philip on November 14. This popular name reveals how the calendar of saints structures time in the Orthodox tradition: the great fasts and feasts are anchored in the memory of the Apostles and saints, not in abstract astronomical reference points.
Theological meaning: preparing for the Incarnation
The theology of the Nativity Fast is centered on a mystery that the Orthodox tradition calls the Incarnation — the fact that the eternal Son of God took flesh in the womb of the Virgin Mary and was born as a human child in a cave in Bethlehem. This mystery is at the heart of the Christian faith, and the Nativity Fast is the preparation of the soul to receive it.
The Incarnation: divine condescension
The Orthodox patristic tradition speaks of the Incarnation as a kenosis — a voluntary self-emptying of the Son of God. He who is without limits accepts to be born in a limited body. He who is without beginning accepts a beginning. He who is the Light accepts to be born in the darkness of a cave. The fasting of the believer participates in this logic of kenosis: by abstaining from food and reducing bodily pleasures, the Christian creates in himself a space of humility and interior poverty that corresponds to the poverty in which Christ chose to be born. One does not prepare for the Nativity with feasting, but with the interior silence of fasting.
Orthodox Christmas and Western Christmas: two ways of waiting
The contrast between the Orthodox and Western approaches to Christmas is striking — and for converts from Protestant or Catholic backgrounds, it is often one of the most revealing aspects of entering the Orthodox Church. In the contemporary Western world, December is the month of celebration, abundance and sociability. Christmas decorations appear in stores in October. Christmas music plays in shopping malls from November 1. The feast is consumed before it arrives. In the Orthodox tradition, December is first the month of fasting and waiting. The joy of Christmas is not anticipated with lights and songs — it is kept for the night of December 24, after forty days of sober preparation. For many converts, the Nativity Fast is the moment when they first understand viscerally what it means to celebrate Christmas as a feast rather than a season, as an event rather than an atmosphere.
The feasts within the fast
The Nativity Fast is not a liturgical desert of forty days. It is punctuated by great feasts that give each week its own spiritual color and lighten the fast with moments of joy.
November 21: the Entry of the Mother of God into the Temple
The first great feast of the Nativity Fast is the Entry of the Mother of God into the Temple, celebrated on November 21 — one of the Twelve Great Feasts of the Dodekaorton. It commemorates the entry of the three-year-old Virgin Mary into the Temple of Jerusalem, where she lived until the age of twelve. This feast, falling one week after the start of the fast, is its first great joy: the preparation for the coming of Christ begins by contemplating the one who carried Him in her womb. A fish dispensation is granted on this day regardless of the day of the week. In American, Canadian and British Orthodox parishes, this feast is increasingly well observed — a sign of the deepening liturgical seriousness of English-speaking Orthodox communities.
December 6: Saint Nicholas
December 6 is the feast of Saint Nicholas of Myra — one of the most beloved saints' feasts in the entire Orthodox tradition. Archbishop of Myra in Lycia (modern Turkey) in the 4th century, Saint Nicholas is venerated as the protector of children, sailors, travelers, the unjustly imprisoned and the poor. He is one of the most represented saints in Orthodox iconography and his intercession is invoked in all Orthodox traditions without exception.
In the English-speaking world, Saint Nicholas occupies a unique and somewhat complicated cultural position. Santa Claus — the jolly gift-giver of American and British Christmas culture — is a distant cultural descendant of the Orthodox bishop of Myra, filtered through Dutch Sinterklaas traditions and commercialized beyond recognition over the past two centuries. For Orthodox Christians in America and Britain, December 6 is an opportunity to recover the real figure behind the cultural myth: not a gift-dispensing legend, but a bishop who secretly provided dowries for three impoverished girls, who intervened to save sailors from drowning, who stood for truth at the Council of Nicaea. Celebrating the real Saint Nicholas on December 6 — with a festive Divine Liturgy and the fish dispensation that honors him — is one of the small acts of cultural reclamation available to Orthodox Christians in the English-speaking world.
December 9: the Conception of Saint Anna
December 9 is the feast of the Conception of the Mother of God by Saint Anna — the commemoration of the moment when Anna, mother of Mary, conceived the Theotokos. This feast, little known outside the Orthodox tradition, is theologically coherent with the movement of the Nativity Fast: the preparation for the Nativity of Christ reaches back to the conception of the one who would carry Him. It is also a feast of hope for couples awaiting a child — the intercession of Saint Anna is traditionally invoked for difficult pregnancies and fertility.
December 17: the Holy Forefathers of Christ
The Sunday nearest December 17 is the Sunday of the Holy Forefathers of Christ — a solemn commemoration of the entire lineage of the patriarchs, prophets and righteous ones of the Old Testament who waited and prepared for the coming of the Messiah over millennia. Abraham, Isaac, Jacob, Moses, David, Isaiah, Elijah — all those who lived in expectation of the Savior are honored together. It is one of the most moving services of the Nativity Fast: by commemorating those who waited, the Church reminds its faithful that they are participating in a millennia-long expectation whose end is now approaching.
The fasting rules in detail: a progressive fast
The Nativity Fast is the only one of the four great Orthodox fasts whose fasting rules change during the course of the fast itself. Its progressive structure makes it one of the most pedagogically rich.
First phase: November 15 to December 19
| Day of the week | Fasting rule |
|---|---|
| Monday | Cooked vegetables with oil and wine permitted. No fish |
| Tuesday, Thursday | Fish, oil and wine permitted |
| Wednesday, Friday | Strict fast: dried vegetables, bread, water. No oil, no wine, no fish |
| Saturday, Sunday | Fish, oil and wine permitted |
| November 21 (Entry into the Temple) | Fish permitted regardless of the day of the week |
| December 6 (Saint Nicholas) | Fish permitted regardless of the day of the week |
Second phase: December 20 to 24
| Day of the week | Fasting rule |
|---|---|
| Monday, Wednesday, Friday | Strict fast: dried vegetables, bread, water. No oil, no wine, no fish |
| Tuesday, Thursday | Cooked vegetables with oil and wine permitted. No fish |
| Saturday, Sunday | Oil and wine permitted. No fish |
| Evening of December 24 | End of the fast: from the evening Liturgy, all restrictions are lifted |
Forbidden throughout the entire Nativity Fast: meat, poultry, dairy products (cheese, butter, milk, cream), eggs.
Always permitted: fresh and cooked vegetables, legumes, grains, bread, egg-free pasta, rice, fresh and dried fruit, nuts, mushrooms, olives, shellfish and seafood (mussels, shrimp — according to tradition), water, herbal tea, coffee.
December 25: the Nativity of Christ
The Nativity Fast prepares the Nativity of Christ, celebrated on December 25 (Gregorian calendar) — one of the Twelve Great Feasts of the Dodekaorton and the second most solemn feast of the Orthodox year after Pascha.
The cave, not the stable
The Orthodox tradition locates the birth of Christ in a cave, not a stable — in keeping with the earliest sources of the 2nd century, particularly the Protoevangelium of James. This is not a minor detail: the cave is a place of darkness, cold and absolute poverty — and it is precisely in this darkness that the divine Light chooses to enter the world. The Orthodox icon of the Nativity always shows this dark cave with the divine Child radiating light at its center, surrounded by the Mother of God reclining after the birth, the thoughtful Joseph, the shepherds and the Magi. For many converts, encountering the Orthodox Nativity icon for the first time is a moment of genuine theological illumination: Christmas is not a warm, domestic scene — it is the invasion of divine light into the world's deepest darkness.
The Royal Hours
The eve of the Nativity (December 24) is marked by a liturgical service without parallel in the Western tradition: the Royal Hours. These are four consecutive liturgical hours — Prime, Terce, Sext and None — sung on the morning of December 24, with prophetic readings from the Old Testament, epistles and gospels proper to each hour. This long and solemn service is for the Nativity what the Royal Hours of Theophany are for the Baptism of the Lord. It marks the transition between fast and feast. In most American Orthodox parishes, the Royal Hours are served on the morning of December 24 — a service that working faithful can attend before their Christmas Eve celebrations, entering the feast through the door of liturgical preparation rather than through the door of the shopping mall.
The Orthodox Christmas night
The night of December 24 is celebrated with a Great Vespers followed by the Divine Liturgy of Saint Basil the Great — the longest and most ancient Liturgy of the Orthodox tradition, reserved for the greatest feasts of the year. In many parishes this Liturgy begins at midnight — in direct echo of the Paschal night — and continues until dawn. The joy that breaks forth after forty days of fasting is of a particular quality: it is not the joy of consumption or social custom, but the joy of one who has truly waited and finally sees what was awaited.
The Nativity Fast in the English-speaking world
Keeping the Nativity Fast in the United States, Canada, the United Kingdom or Australia is perhaps the most practically challenging ascetic undertaking of the Orthodox year — not because of its fasting rules (more flexible than Great Lent), but because of the cultural and social context in which it unfolds.
December in the English-speaking world: the hardest month to fast
December is in the English-speaking world the month of maximum gastronomic and social pressure. In America: Thanksgiving has just passed, Christmas parties begin immediately, holiday cookies and eggnog appear at every office gathering, Christmas dinners with family, friends and colleagues fill the calendar from mid-November through the end of December. In Britain: work Christmas dinners, mince pies at every meeting, mulled wine at every gathering, the entire culture oriented toward festive eating and drinking. In all cases, keeping the Nativity Fast in December in the English-speaking world means swimming against the strongest possible cultural current at its most powerful moment.
And yet this is precisely what gives the fast its spiritual value. To fast when everyone around you is feasting is an act of interior freedom. To maintain the silence of waiting when the culture around you has been celebrating Christmas since Halloween is a form of quiet witness. For Orthodox Christians in the English-speaking world, the Nativity Fast is the opportunity to live December differently — to actually wait for what one is waiting for, to not consume the feast before it arrives.
Saint Nicholas and Santa Claus: recovering the real bishop
December 6 offers Orthodox Christians in the English-speaking world a unique opportunity — and a gentle challenge. The figure of Santa Claus, ubiquitous in American and British Christmas culture, is a distant cultural descendant of the same Orthodox bishop of Myra whose feast falls on December 6. Dutch immigrants brought the Sinterklaas tradition to America, where it was gradually transformed into the commercial figure of today. For Orthodox families with children, December 6 is an occasion to tell the real story: the bishop who gave away his wealth to provide for three impoverished girls, who prayed for sailors in a storm, who stood for orthodox theology at the Council of Nicaea and slapped a heretic. The Divine Liturgy of Saint Nicholas on December 6, the fish dispensation, the parish celebration — all of these are ways of honoring the real figure and gently reclaiming a feast that the surrounding culture has transformed almost beyond recognition. Many Orthodox families in America and Britain observe December 6 as a special day for their children — small gifts, the story of the real saint, a visit to the parish Liturgy — alongside or instead of the December 25 gift-giving tradition.
Thanksgiving and the start of the fast
For American Orthodox Christians, the Nativity Fast begins on November 15 — just two weeks before Thanksgiving. This creates an annual pastoral question: does Thanksgiving fall within the fast, and how should it be observed? The answer varies by jurisdiction and confessor, but the general pastoral guidance in most American Orthodox communities is that Thanksgiving — as a family and national feast of gratitude, not a liturgical Orthodox feast — can be observed with reasonable flexibility under the guidance of one's priest. Thanksgiving is not a feast the Orthodox Church prescribes; it is a civic tradition the Orthodox Church inhabits. Many American Orthodox priests encourage their faithful to celebrate Thanksgiving with family in the spirit of gratitude while returning to the fast immediately afterward. The Nativity Fast does not demand that Orthodox Christians become strangers to their families and cultures — it asks for an interior orientation that can coexist with genuine human celebration.
Christmas parties, office dinners and holiday gatherings
The most frequently asked practical question among Orthodox Christians in the English-speaking world during the Nativity Fast is: how do I handle work Christmas parties, holiday dinners and family gatherings? Some orientations drawn from Orthodox pastoral practice:
- Fasting is a personal matter — it is not necessary to announce to the entire table that one is fasting. Choosing the permitted dishes quietly without making the meal a venue for involuntary catechesis.
- The Orthodox tradition distinguishes strict dietary fasting (at home, at ordinary meals) from meals of conviviality where reasonable flexibility is possible under a spiritual father's guidance.
- The goal is perseverance, not perfection. A fast observed imperfectly but consistently is worth far more than an abandoned fast. The office Christmas party on December 15 does not have the same spiritual weight as Holy Friday.
- Speaking with one's priest before the fast begins — describing the social calendar of the coming weeks — allows for a fasting rule that is realistic and sustainable rather than idealistic and doomed.
Fasting food in the English-speaking November and December
Practically, the Nativity Fast is very manageable in the culinary context of an English-speaking November and December. The first phase (November 15 – December 19), when fish is permitted on several days, coincides with the season when American and British fish counters carry excellent salmon, cod, haddock, shrimp, scallops and oysters. A baked salmon with roasted vegetables, a shrimp stir-fry with rice, a lentil soup with crusty bread, a roasted butternut squash with herbs: all of these are satisfying fasting meals that require no culinary heroism. The second phase (December 20 – 24) invites five days of stricter sobriety — a final intensification before the feast breaks. The food of the Nativity Fast in the English-speaking world is wholesome, seasonal and far less exotic than many converts fear when they first encounter the rules.
The Nativity Fast and the convert experience
For many converts to Orthodoxy in the English-speaking world, the Nativity Fast is the fast that most clearly reveals the difference between what they had before and what they have now. Most Protestant backgrounds have no serious pre-Christmas fast at all — Advent, where it is observed, is mild at best. Most Catholic backgrounds have a nominal Advent but no dietary fast. When converts keep their first Nativity Fast, they are often struck by how profoundly it transforms their experience of Christmas itself: the midnight Liturgy on December 24, the breaking of the fast, the Nativity icon, the royal hours — all of it carries a weight and a joy that Christmas had never carried before. Many converts describe Christmas after their first Nativity Fast as feeling, for the first time in their lives, like an actual feast — the culmination of a real period of waiting rather than the conclusion of a commercial season. For Orthodox converts in the English-speaking world, the Nativity Fast is often where Christmas becomes Christmas for the first time.
FAQ — Frequently asked questions about the Nativity Fast
When does the Nativity Fast begin and end?
The Nativity Fast begins on November 15 and ends on the evening of December 24 for churches of the Gregorian calendar (Greek Orthodox, Romanian Orthodox, Antiochian Orthodox). For churches of the Julian calendar (Russian Orthodox, Serbian Orthodox, Georgian Orthodox), it begins on November 28 (Gregorian) and ends on the evening of January 6, the eve of their Nativity on January 7.
Can you eat fish during the Nativity Fast?
Yes — during the first phase (November 15 – December 19), fish is permitted on Tuesdays, Thursdays, Saturdays and Sundays. During the second phase (December 20 – 24), fish is no longer permitted. Fish dispensations are granted on the great feasts that fall within the fast (Entry of the Mother of God into the Temple, November 21; Saint Nicholas, December 6).
Why does the Nativity Fast last forty days?
Forty days is a biblically significant number in the Orthodox tradition — the forty days of Moses on Sinai, of Elijah in the desert, of Christ in the desert. The Nativity Fast lasts forty days to signify that the coming of the Son of God into the world deserves the same depth of preparation as His Resurrection. It is not the fast of a secondary feast — it is the fast that prepares the Incarnation, the founding mystery of Christianity.
What is the difference between the Nativity Fast and Great Lent?
Great Lent is stricter and more penitential in tone — it prepares for the death and Resurrection of Christ. The Nativity Fast is progressive and more joyful in tone — it prepares for the coming of Christ into the world. Fish is permitted far more frequently during the Nativity Fast (especially in the first phase) than during Great Lent. The Paraklesis belongs to the Dormition Fast; the Nativity Fast has the Royal Hours of December 24 as its defining liturgical service.
Do Orthodox Christians celebrate Christmas on December 25 or January 7?
Both dates are observed in different Orthodox churches. Churches of the revised Julian calendar — Greek Orthodox, Romanian Orthodox, Antiochian Orthodox, Cypriot — celebrate the Nativity on December 25, alongside Catholics and Protestants. Churches of the Julian calendar — Russian Orthodox, Serbian Orthodox, Georgian Orthodox, Jerusalem — celebrate the Nativity on January 7 of the Gregorian calendar (their Julian December 25). In most English-speaking Orthodox jurisdictions (Greek Orthodox Archdiocese of America, Antiochian Orthodox, OCA), Christmas is celebrated on December 25; Russian and Serbian parishes celebrate on January 7.
How do I handle Thanksgiving during the Nativity Fast?
Thanksgiving (the fourth Thursday of November in the US, the second Monday of October in Canada) falls within the Nativity Fast each year. The general pastoral guidance in most American Orthodox communities is that Thanksgiving can be observed with reasonable flexibility as a civic feast of gratitude — not as a liturgical dispensation but as a recognition that Orthodox Christians live in real families and real cultures. Speak with your priest before the fast begins; most will give you a practical rule that honors both the fast and your family obligations.
Can I attend work Christmas parties during the Nativity Fast?
Yes. The Orthodox tradition does not require withdrawal from social life during fasting periods. It calls for an interior sobriety that can coexist with genuine human sociability. Choose the fasting-compatible dishes where possible, drink moderately or abstain from alcohol at your discretion, and return to the full fast at your next private meal. The most important thing is not to abandon the fast entirely because social situations are difficult — perseverance through imperfect circumstances is itself a form of spiritual discipline.
The last fast: forty days toward the light of Bethlehem
The Nativity Fast is the last of the four great fasts of the Orthodox year — and in a certain sense the most beautiful challenge. Forty days in the middle of the English-speaking world's most commercially intense season, maintaining at the core of one's life the awareness that what is approaching is not a cultural tradition or a commercial event, but the mystery of God made man, born in a cave, laid in a manger, come to change forever the course of human history.
For Orthodox Christians in the English-speaking world, keeping this fast is a way of living December differently — not against the surrounding culture, but beyond it. The Christmas lights, the carols, the gift-giving: all of this can be beautiful. But behind it all there is something greater that deserves to be genuinely awaited. The Nativity Fast is the art of waiting for what one is waiting for — and letting the waiting transform the one who waits.
