St. Patrick’s Day

17 March · the feast of Saint Patrick, and a day of Irish heritage and drinking
Not an Islamic festivalChristian saint’s day, with later folk and drinking customs

St. Patrick’s Day is the feast of a fifth-century Christian missionary to Ireland. Today it is also a day of parades, green clothing, shamrocks and, in many places, heavy drinking. Muslims do not celebrate it or take part in it. This page sets out where the day comes from, which popular stories about it are true, legendary or disputed, what the Quran and Sunnah say, and how scholars have ruled. Every claim is sourced. Where historians disagree, or where a story is a legend or an interpretation, we say so, including stories that people on every side repeat.

What it is
St. Patrick’s Day is 17 March, the traditional date of the death of Saint Patrick, who is honoured as the patron saint of Ireland. The Catholic Church, the Anglican Communion (especially the Church of Ireland), the Eastern Orthodox Church and the Lutheran Church keep it as a saint’s feast. Outside church life it has become a day for parades, wearing green, shamrocks, and drinking, and in places such as the United States it is marked far more loudly than in Ireland in the past. This page covers the history, the myths, the figures behind the day, and the Islamic position.
Sources: Wikipedia: Saint Patrick’s Day
The history, step by step

Each step carries a tag. “Documented” means a reliable source states it. “Disputed”, “Legendary” or “Hagiography” means historians do not accept it as history, or the evidence is late or thin.

1. Patrick in his own words

Fifth century, Britain and Ireland
Documented

Two writings are accepted as Patrick’s own: the Confessio and the Letter to Coroticus. The Catholic Encyclopedia calls their genuineness “unquestionable.” In the Confessio he says “My name is Patrick,” says that his father Calpornius was a deacon and his grandfather Potitus a priest, and says he was “about sixteen” when he was taken captive. The Catholic Encyclopedia says Irish raiders carried him off, that he tended his master’s flocks for six years, and that he then escaped.

Wikipedia describes him as a fifth-century Romano-British missionary and bishop, from a family of Romanised Britons; his father was a decurion, a town councillor. The Confessio also speaks of his work as a bishop. He also speaks of “this faith in the Trinity,” so he held the Christian doctrine of the Trinity that the Quran rejects (see the Islamic position below).

Accuracy note
We did not find a source that fixes his birth year, and the dates of his life are uncertain (see the next step).

2. When did he die?

17 March, in 461 or another year
Disputed

17 March is the traditional date of his death, and 461 is the traditional year. Wikipedia reports that the annals give a variety of dates: 457, when “the elder Patrick” is said to have died, which may refer to Palladius; and some modern historians accept about 460, but scholars of early Irish history tend to prefer about 493. The annals also date his arrival in Ireland to 432, but they were compiled long after his death, and Wikipedia says 432 was probably chosen to play down Palladius and play up Patrick.

Accuracy note
So “he died on 17 March 461” is a tradition. We mark the year disputed.

3. The first biographies

Late seventh century
Hagiography, not biography

The earliest lives of Patrick are by Muirchú and Tírechán, written in the late seventh century, more than a century after the traditional date of his death. Both relied on a lost earlier work, the Book of Ultán. They mix memory with legend: Patrick’s contest with Lóegaire’s druids at Tara, the Easter fire at Slane, and several other miracles come from them, not from Patrick’s own writings.

The Catholic Encyclopedia tells the Tara story as history, within an account that has Patrick landing in Ireland probably in 433. We treat it as hagiography, which means a saint’s life written to honour him.

Accuracy note
Names are part of this. Tírechán lists Magonus, Succetus and Patricius as his names, and Muirchú gives Sochet. We did not find “Maewyn” in these early sources.

4. How a saint’s day became an Irish day

Ninth century to 1600s
Documented in outline; the year is disputed

Wikipedia says the Irish in Europe were already keeping 17 March as a kind of national day in the ninth and tenth centuries. In the early 1600s the feast was placed in the Church calendar. The Catholic Encyclopedia says that Luke Wadding, an Irish Franciscan in Rome, kept the feast every year with great solemnity, and that “it is due to his influence, as member of the commission for the reform of the Breviary” that the feast was inserted on 17 March in the calendar of the Universal Church.

The date is not settled. Popular accounts give 1631 and credit Pope Urban VIII with adding the feast. The Wild Geese, a historical profile of Wadding, and the National Catholic Reporter credit Wadding’s lobbying; one study we found places his work on the commission between 1629 and 1631. We cannot confirm the year from a primary source.

Accuracy note
We say “Wadding secured the feast through the breviary commission under Urban VIII” and leave the year open. We do not say Urban VIII personally added it.

5. The shamrock and the Trinity story

Written down in 1726
Legendary: first written about 1,200 years later

The first written mention of Irish people wearing the shamrock on this day is in 1681, by the English traveller Thomas Dineley. He wrote that the Irish “were crosses in their hatts, some of pinns, some of green ribbon, and the vulgar superstitiously wear shamroges, 3 leav’d grass.” Wikipedia notes that Dineley says nothing about Patrick using it to teach the Trinity.

The story that Patrick used the shamrock to explain the Trinity first appears in writing in 1726, in the botanist Caleb Threlkeld’s book. Threlkeld calls it a “current tradition,” and adds, “However that be, when they wet their Seamar-oge, they often commit excess in liquor, which is not a right keeping of a day to the Lord.” The Confessio does not mention the shamrock.

Accuracy note
Some sources give 1727 for Threlkeld. Wikipedia and the paper it cites give 1726. We follow that.

6. The snakes

Late twelfth century
Myth

The story says Patrick drove the snakes out of Ireland. National Geographic quotes Nigel Monaghan of the National Museum of Ireland: “At no time has there ever been any suggestion of snakes in Ireland, so [there was] nothing for St. Patrick to banish.” Scientists put it down to the ice age and the sea. Wikipedia adds that Solinus noted Ireland’s lack of snakes as early as the third century, that the Life of Saint Columba already has another Irish saint banishing snakes, and that the earliest writing about Patrick doing it is Jocelin of Furness in the late twelfth century.

Scholars often read the story as an allegory in which snakes stand for paganism, which Patrick is said to have ended (National Geographic). That is an interpretation, not a record. We mark it as such.

7. Green and blue

About 1750 to the 1790s
Documented

Wikipedia says the Friendly Brothers of St Patrick, a fraternity founded about 1750, adopted green. The Order of St Patrick, founded in 1783, adopted blue instead, which is why blue came to be linked with Saint Patrick. In the 1790s the United Irishmen adopted green, and the song “The Wearing of the Green” belongs to that period.

Accuracy note
Whether blue was an older Irish colour is debated. We only say that the Order of St Patrick used it from 1783.

8. The day crosses the Atlantic

1600 to 1903
Documented; the details are disputed

Historian J. Michael Francis of the University of South Florida found Spanish gunpowder-expenditure records for St. Augustine, Florida, for 1600 and 1601. They show residents processing through the streets for the feast of San Patricio with cannon fire. USF names the Irish priest Ricardo Artur (Richard Arthur) as the likely source of the devotion. HISTORY dates the first recorded parade to 17 March 1601.

The Charitable Irish Society of Boston was founded on 17 March 1737 by 26 men of Ulster birth or ancestry (Massachusetts Historical Society). It was a society dinner and meeting, not a parade. In New York, the parade organisers date the first parade to 1762 and say Irish members of the British Army marched. The New-York Historical says the earliest recorded observance was in 1756 and was not a parade, and that the first account that resembles a parade is from 1766.

In Ireland itself the first St. Patrick’s Day parade was held in Waterford in 1903, which Wikipedia says was hundreds of years after the first parade in North America.

Accuracy note
The St. Augustine entries are from 1600 and 1601 and record gunpowder, not a description of a parade. The Boston and New York dates are as the sources give them, and the New York date is disputed.

9. Pubs shut, then open: how drinking grew around the day

1726 to today
Documented

Threlkeld complained in 1726 that people “often commit excess in liquor” on the day (card 5). Wikipedia says the Lenten restrictions on fasting and drinking alcohol were historically lifted for the day, which encouraged its tradition of revelry, and it describes the custom of “drowning the shamrock,” in which a shamrock is put in the bottom of a cup that is then filled with drink and drunk as a toast. In Ireland, the Intoxicating Liquor Act 1927 made it unlawful to sell intoxicating liquor on Christmas Day, Good Friday or Saint Patrick’s Day (section 2). Secondary sources say the St. Patrick’s Day closure was ended by the Intoxicating Liquor Act 1960, and give the year as 1960 or 1961.

The United States National Highway Traffic Safety Administration reports that, in the St. Patrick’s Day period of 2020, more than a third (36%) of crash fatalities involved a drunk driver, and that 287 lives were lost in drunk-driving crashes in the St. Patrick’s Day periods from 2016 to 2020.

Accuracy note
We did not find the repealing section ourselves, so we leave the exact year open.
Myths and misconceptions

These are the stories most often told about the day. Each carries a label: True, False, Partly true, Legend or Disputed. We correct claims on both sides, including claims that Muslim writers repeat.

10. “Patrick was Irish”

A popular belief
False

Patrick was Romano-British. He was taken to Ireland as a captive and later returned as a missionary (cards 1 and 3).

11. “His real name was Maewyn Succat”

A popular belief
Disputed: a late tradition

In the Confessio he calls himself Patrick. The seventh-century lives list other names, among them Succetus (Tírechán) and Sochet (Muirchú). The two-part “Maewyn Succat” is a later tradition. We did not find “Maewyn” in the early sources.

12. “He died on 17 March 461”

A popular belief
Disputed

See card 2. The day is traditional, the year is traditional, and scholars of early Irish history lean toward about 493.

13. “Urban VIII added St. Patrick’s Day to the calendar in 1631”

A popular belief
Partly true; the date is disputed

Urban VIII was pope from 1623 to 1644 (Wikipedia). The Catholic Encyclopedia credits Wadding’s influence as a member of the breviary reform commission, not a personal act of the pope. Popular accounts give 1631; other sources give other years. See card 4.

14. “Patrick used the shamrock to teach the Trinity”

A popular belief
Legend

The story is first written in 1726 (card 5). The Confessio does not mention the shamrock. Dineley’s 1681 description of the day does not mention the Trinity.

15. “He drove the snakes out of Ireland”

A popular belief
False

Ireland never had snakes to drive out (card 6). The idea that the story stands for ending paganism is an interpretation, not a fact.

16. “Blue is the colour of St. Patrick, and green is the original colour of the day”

A popular belief
Disputed

Green was taken up by the Friendly Brothers (about 1750) and the United Irishmen (1790s), and the Order of St Patrick chose blue in 1783 (card 7). Neither colour is attested for the saint himself in his own writings.

17. “The Church lifted Lent so people could drink, and that is why the day is a drinking day”

A popular explanation
Partly true; the cause is disputed

It is documented that on the day the Lenten fast was relaxed for the faithful and that men went drinking after Mass (card 9). It is not documented that the relaxation caused the drinking culture, and Threlkeld was already complaining of excess in 1726. We call the causal link a proposed explanation.

18. “The first St. Patrick’s Day parade was in Boston in 1737, held by soldiers”

A popular belief
False

In 1737 the Charitable Irish Society was founded in Boston by 26 men of Ulster birth or ancestry (card 8). We found no source that calls it a parade or says soldiers held it. The earliest recorded St. Patrick’s procession in the Americas is the Spanish one at St. Augustine in 1600 and 1601, and even that comes from gunpowder records.

19. “The first New York parade was in 1762, by Irish soldiers”

A popular belief
Disputed

The parade organisers give 1762 and say Irish members of the British Army marched. The New-York Historical gives 1756 as the earliest recorded observance, not a parade, and 1766 for the first account that resembles one. We leave the date open and note the soldiers as the organisers’ claim.

20. “Parades are an old Irish tradition”

A popular belief
False

HISTORY says St. Patrick’s Day parades and feasting on corned beef and cabbage were American creations, not Irish ones. Wikipedia puts the first parade in Ireland at Waterford in 1903.

21. “Corned beef and cabbage is the traditional Irish dish, and it came from Jewish butchers”

A popular belief
Partly true; the history is debated

HISTORY describes the customary St. Patrick’s Day meal in Ireland as Irish bacon and cabbage, and says that parades and feasting on corned beef and cabbage were American creations, not Irish ones. The Smithsonian says that in Ireland, when people could afford any meat at all, they ate salted pork or bacon, that the Irish relied mainly on the potato, and that the meal eaten on the day in Ireland is lamb or bacon.

The Smithsonian’s account of the change is as follows. After the Great Famine, Irish immigrants settled mostly in New York City and earned more than they had in Ireland. With more money for food they could afford meat, and “instead of their beloved bacon, the Irish began eating beef,” namely corned beef. It adds that they “almost solely bought their meat from kosher butchers,” and that what we think of as Irish corned beef is “actually Jewish corned beef thrown into a pot with cabbage and potatoes.” The reason it gives is that the immigrants could now afford beef, not that pork was too expensive, and we found no source for a “pork was too expensive” explanation.

Accuracy note
This is one magazine’s account, and we give it as reported, not as settled. We state these facts for information only. We make no claim here about whether any meat is halal, and we do not promote the meal.

22. “Leprechauns come from the Tuatha Dé Danann or water spirits”

A popular belief
Disputed, and weak

The earliest known reference to the leprechaun is in the medieval tale Echtra Fergus mac Léti, an eighth-century text, in which Fergus, King of Ulster, is dragged toward the sea by three lúchorpáin, usually explained as “small bodies.” Wikipedia presents other etymologies as proposals only. We found no good source for a Tuatha Dé Danann origin, so we do not rely on it. The green coat and the link to St. Patrick’s Day are later.

Accuracy note
Wikipedia also notes that leprechaun outfits worn for the day are based on derogatory nineteenth-century caricatures of the Irish. We found no source showing that twentieth-century American commerce alone caused the merger of leprechauns and the day, so we do not claim it.

23. “Patrick beat the druids at Tara”

Told by Muirchú and Tírechán
Legend (hagiography)

The story of his contest with Lóegaire’s druids at Tara comes from the seventh-century lives (card 3). The link some writers draw between the druids and the snakes, so that the banished snakes stand for the druids, is an interpretation by later readers, not something either life says.

The customs and what they are tied to
1.
The saint’s feast
The day began as the feast of a Christian saint, kept as a holy day by Catholic, Anglican, Orthodox and Lutheran churches (cards 4 and 8). A Muslim does not keep the feast days of saints.
2.
The shamrock
Worn on the day from at least 1681 and tied to the Trinity story from 1726 (card 5). The story is a teaching about the Trinity, which the Quran rejects (4:171, 5:73).
3.
Green, and sometimes blue
Colours taken up in the eighteenth century by societies and orders (card 7). The colour is a mark of belonging to the day.
4.
Parades
Public processions that began in North America and reached Ireland only in 1903 (card 8). They carry the saint’s name and, in many places, a church service as well.
5.
Drinking
Pub drinking has marked the day since at least 1726 (card 9). Alcohol is forbidden in Islam (Quran 5:90 to 91).
6.
Leprechauns
A folk-tale figure from medieval Irish tales, later decorated with a green coat and attached to the day (card 22). A fairy-tale being is not something a Muslim honours.
The figures behind the day

Text only. We show no picture of the saint, no cross, shamrock or any other religious symbol, and we do not treat the legends as history.

Saint Patrick

Fifth century, Britain and Ireland
A missionary and bishop

Romano-British, taken to Ireland as a captive at about sixteen, returned as a missionary. He is known from his own Confessio and Letter to Coroticus, and from legends written well over a century later (cards 1 to 3).

Death date and birth name are traditions (cards 2 and 11).

ThemeA saint honoured by feast, with a Trinitarian creed

Luke Wadding

1588 to 1657
Irish Franciscan, historian

Born at Waterford and died in Rome. The Catholic Encyclopedia says he kept Patrick’s feast each year with great solemnity at St. Isidore’s College, and that his influence on the breviary commission got the feast onto 17 March in the universal calendar.

The year is disputed (card 4).

ThemeThe step from a local feast to the Church calendar

Pope Urban VIII

Pope 1623 to 1644
Head of the Catholic Church

Pope from 1623 to 1644, the reign in which the feast entered the universal calendar. Popular accounts credit him with adding the feast in 1631; the sources we read credit Wadding’s influence on the breviary commission (card 13). We did not find a source showing the pope acted on his own.

ThemeAuthority behind the Church calendar

Caleb Threlkeld

1726
Botanist and writer

Wrote the first known account of the shamrock and the Trinity, and described the excess in liquor on the day (card 5).

ThemeThe shamrock legend and the drinking, in one text

The leprechaun

Medieval Irish tales
A folk-tale figure

Earliest known in the eighth-century Echtra Fergus mac Léti as lúchorpáin, “small bodies” (card 22). Wikipedia says the leprechaun is said to be a solitary creature whose main occupation is making and cobbling shoes. The green coat and the link to the day are later.

We found no good source for the Tuatha Dé Danann link.

ThemeFolklore, not history

Lóegaire’s druids at Tara

Told in the late seventh century
Legend (hagiography)

In Muirchú’s life, Patrick lights the Easter fire at Slane and beats the royal druids at Tara. It is not in Patrick’s own writings (card 23).

The druids-to-snakes link is an interpretation.

ThemeA saint’s legend retold as history

George III and the Order of St Patrick

1783
British king and a chivalric order

The Order of St Patrick was created in 1783 by King George III at the request of the Lord Lieutenant of Ireland, the Earl Temple. It adopted blue, which is why blue became linked with Saint Patrick (card 7). The regular creation of knights lasted until 1922, and the last appointment was in 1936.

Whether blue was an older Irish colour is debated.

ThemeColour as a badge of loyalty

Irish groups in Boston (1737) and New York (1762)

Eighteenth century
Societies and soldiers

The Charitable Irish Society of Boston was founded on 17 March 1737 by 26 men of Ulster birth or ancestry. In New York, the parade organisers say Irish members of the British Army marched in 1762. We found no source for soldiers in Boston in 1737 (cards 18 and 19).

The New York date is disputed.

ThemeThe day as an emigrant community’s identity

The Islamic position

Muslims do not celebrate St. Patrick’s Day. The evidence below is from the Quran and authenticated reports. We give the grade of each hadith and say where scholars of hadith differ.

1.
Sunan Abi Dawud 1134Sahih (Al-Albani)
Anas ibn Malik: “When the Messenger of Allah (ﷺ) came to Medina, the people had two days on which they engaged in games. He asked: What are these two days (what is the significance)? They said: We used to engage ourselves on them in the pre-Islamic period. The Messenger of Allah (ﷺ) said: Allah has substituted for them something better than them, the day of sacrifice and the day of the breaking of the fast.”
The Prophet replaced inherited festival days with the two Eids. A Muslim already has his festivals, so a saint’s feast of another faith has no place.
2.
Sunan Abi Dawud 4031Hasan Sahih (Al-Albani)
Ibn Umar: the Prophet (ﷺ) said, “He who copies any people is one of them.”
Graded Hasan Sahih by Al-Albani on sunnah.com. The Mufti of the Federal Territory reports that Ibn Taymiyyah called the chain good, Ibn Hajar graded it hasan, and al-Iraqi graded it sahih, and that scholars differ over the reliability of one narrator, Ibn Thawban. Scholars also differ on how far “copying” reaches. We cite it for religious festivals and rites.
3.
“O People of the Scripture, do not commit excess in your religion or say about Allah except the truth. The Messiah, Jesus, the son of Mary, was but a messenger of Allah and His word which He directed to Mary and a soul [created at a command] from Him. So believe in Allah and His messengers. And do not say, “Three”; desist - it is better for you. Indeed, Allah is but one God. Exalted is He above having a son. To Him belongs whatever is in the heavens and whatever is on the earth. And sufficient is Allah as Disposer of affairs.”
The verse addresses the People of the Scripture directly. The shamrock story, whatever its date, is a picture of the Trinity, and the Trinity is exactly what the Quran asks them to stop saying.
4.
“They have certainly disbelieved who say, “Allah is the third of three.” And there is no god except one God. And if they do not desist from what they are saying, there will surely afflict the disbelievers among them a painful punishment.”
The verse rejects the doctrine that God is a trinity. A Muslim does not take part in a day that has a trinity symbol at its centre.
5.
“Say, “He is Allah, [who is] One, Allah, the Eternal Refuge. He neither begets nor is born, Nor is there to Him any equivalent.””
The creed of tawhid in four verses. Allah is One, neither begets nor is begotten, and has no equal. Saints, symbols and feasts have no share in His worship.
6.
“Say, “O People of the Scripture, come to a word that is equitable between us and you - that we will not worship except Allah and not associate anything with Him and not take one another as lords instead of Allah.” But if they turn away, then say, “Bear witness that we are Muslims [submitting to Him].””
Muslims read this as an invitation to worship Allah alone and not to take any person as a lord besides Him. A saint’s feast with prayers and patronage is the kind of practice this verse calls people away from. We state this as the Muslim reading of the verse.
7.
“And [they are] those who do not testify to falsehood, and when they pass near ill speech, they pass by with dignity.”
The word translated “falsehood” (zur) is explained in several ways. Ibn Kathir reports that Abu al-Aliyah, Tawus, Ibn Sirin, al-Dahhak, al-Rabi‘ ibn Anas and others said it means the festivals of the polytheists. He lists other views too and says the plain meaning is that they do not attend falsehood. Al-Qurtubi reports the festivals view from Ibn Abbas in one narration. So this is one early view among several, not a ruling.
8.
“O you who have believed, indeed, intoxicants, gambling, [sacrificing on] stone alters [to other than Allah], and divining arrows are but defilement from the work of Satan, so avoid it that you may be successful.” “Satan only wants to cause between you animosity and hatred through intoxicants and gambling and to avert you from the remembrance of Allah and from prayer. So will you not desist?”
Intoxicants are called a defilement from the work of Satan. A day built around pub drinking (card 9) runs directly against the command to avoid it.
Our reading, and what we do not claim. We do not say Patrick taught the shamrock story, drove out snakes, or invented any custom of the day. The Islamic case does not need those legends. It rests on four points: the day is the feast of a Christian saint, it is a third festival when Islam has two, its best-known symbol belongs to the Trinity story, and its customs centre on drinking. A reader who points out that the day is now more about Irish culture than about the saint is answered by the Standing Committee, who rule that joining other communities’ festivals is not permitted whether the occasion is religious or secular (see below). Patrick’s own life, a captive who held to his faith, is a human story that we can read with respect without taking part in the day.
What scholars have ruled

Major fatwa bodies and scholars have ruled that Muslims should not take part in the festivals of non-Muslims. We searched the sources we cite for a ruling that names St. Patrick’s Day, and did not find one, so the rulings below are general rulings on non-Muslim festivals, which scholars apply to this day. Quotations are as given on the pages we cite.

1.
It is “not permissible to participate with the Christians or any other disbelievers in their festivals, because this is cooperation in sin and aggression, and it is affirming what is wrong, and it is showing loyalty to them.” It cites Quran 25:72, explained as not attending what is wrong, “such as the festivals of the disbelievers.”
Source: alifta.gov.sa, as reproduced on al-fatawa.com.
2.
The Committee calls celebrations of festivals that Allah has not sanctioned “religious innovations (bid‘ah)” and says: “In Islam, there are only two festivals: the festival at the end of Ramadan (‘Id al-Fitr) and the festival of sacrifice (‘Id al-Adha).”
The same reasoning as the hadith of the two days (Abu Dawud 1134).
3.
“It is not permissible for the Muslim to join the non-Muslims in their festivals and to express joy and happiness on these occasions, or to take the day off work, whether the occasion is religious or secular.” It gives the reasons as imitation and co-operating in falsehood, citing Abu Dawud 4031 and Quran 5:2, and recommends Ibn Taymiyyah’s Iqtida’ al-Sirat al-Mustaqim.
This answers the claim that a festival is only cultural.
4.
As quoted by IslamQA, Ibn Uthaymin says that greeting non-Muslims on their religious festivals is prohibited by consensus and that accepting invitations is worse; it also forbids imitating them by “having parties on such occasions, or exchanging gifts, or giving out sweets or food, or taking time off work.” It quotes Ibn al-Qayyim (Ahkam Ahl al-Dhimmah) and Ibn Taymiyyah (Iqtida’): “Imitating them in some of their festivals implies that one is pleased with their false beliefs and practices.”
Majmu‘ Fatawa wa Rasa’il Ibn Uthaymin 3/369, as quoted by IslamQA.
5.
As quoted by IslamQA, Ibn Taymiyyah says (Majmu‘ al-Fatawa 25/329): “It is not permissible for the Muslims to imitate them in any way that is unique to their festivals, whether it be food, clothes, bathing, lighting fires or refraining from usual work or worship, and so on.” He adds that “the day of their festivals is just an ordinary day for the Muslims.”
We cite only the part that states the prohibition.
These rulings agree: the festivals of other religions are not festivals of Islam, and Muslims should not keep them, mark them or join in them.
Other monotheists who abstain

Some Jews and some Christians also refuse saints’ days. They do so on their own reasons, and neither community is of one mind, so we give the view and its limits.

Judaism

A rabbinic answer and a limit
Some abstain; not all

Rabbi Jack Abramowitz, answering a question on the Orthodox Union’s OU Torah site (“Is it permissible to celebrate St Patrick’s?”), says: “I’m afraid not. Like Christmas and Halloween, St. Patrick’s Day and Valentine’s Day are religious holidays in another faith. Accordingly, we are not permitted to observe them, even in a secularized fashion.” Yeshivat Har Bracha cites Leviticus 18:3 and says one interpretation of it is that Jews should not imitate customs of non-Jews that are rooted in their religion: “After the doings of the land of Egypt, wherein ye dwelt, shall ye not do: and after the doings of the land of Canaan, whither I bring you, shall ye not do: neither shall ye walk in their ordinances.” (KJV).

Accuracy note
Jewish opinion distinguishes religious festivals from civil or national days, and not every Orthodox authority treats every such day alike. We cite the sources for their stated reasons only.

Christianity

Groups that refuse saints’ days
Some abstain; most do not

Jehovah’s Witnesses say on JW.ORG that they do not take part in events to honour those considered saints, and cite Acts 10:25 to 26, where Peter lifts up a man who bowed to him and says, “Rise; I too am just a man.” The page does not name St. Patrick’s Day, so we state this in general terms.

The Westminster Directory (1645), a Reformed standard, says: “Festival days, vulgarly called Holy-days, having no warrant in the word of God, are not to be continued.” That is a statement from the Puritan and Presbyterian tradition about saints’ days in general, not about this day by name.

Accuracy note
Most Christians, including Catholics, Anglicans, Orthodox and Lutherans, do keep the feast (card 4 and Wikipedia). Reformed and Puritan statements are from the seventeenth century, and we do not claim that every Presbyterian church holds the same position today. We looked for the same position among Samaritans and Mandaeans and found no reliable source, so we do not list them.
Whether a Jewish or Christian group abstains is its own decision, on its own reasons. We cite them to show that objecting to a saint’s day is not only an Islamic position, and we do not claim that their reasons are the same as ours.
For Muslims: what to do instead
1.
Keep your own two Eids joyful
The Prophet (ﷺ) told the people of Medina that Allah had given them two days in place of their old ones (Abu Dawud 1134, Sahih). Make Eid al-Fitr and Eid al-Adha the days of gifts, family and joy.
2.
Keep away from alcohol and the places where it is served
Allah calls intoxicants a defilement from the work of Satan and tells believers to avoid them (Quran 5:90 to 91). If a workplace or school marks the day with drinks, decline politely and do not give or accept any as a gift.
3.
Learn tawhid, and teach it kindly
Read Surah al-Ikhlas (112) with your family, and Quran 4:171, which speaks to the People of the Scripture with respect for Jesus as a messenger of Allah. When a friend asks about the day, you can answer plainly and kindly.
4.
Leave the day’s symbols alone
Do not wear the day’s green clothes or shamrock pins, and do not take part in its parades or parties, following the rulings above.
5.
Be gracious, not hostile
Not celebrating is not a reason to insult or harm anyone. Allah says that He does not forbid you from being righteous and just toward those who do not fight you because of your religion (Quran 60:8: “Allah does not forbid you from those who do not fight you because of religion and do not expel you from your homes - from being righteous toward them and acting justly toward them. Indeed, Allah loves those who act justly.”) Wish your neighbours well in other ways, and decline politely.
6.
Ask a qualified scholar
If your situation is not covered here, ask a scholar you trust. The rulings above are clear that the festivals of other religions are not festivals of Islam.
Sources

The history of the saint and the day

Wadding, the feast and the figures

Food, law and drink

Quran and hadith

Fatwas

Jewish and Christian sources

Quran

Quran translations are Sahih International, from api.alquran.cloud, with each verse linked to quran.com. Hadith are linked to sunnah.com; gradings are given as shown there (Al-Albani for the Sunan). Where we use Wikipedia, we use it for what it reports and mark disputed points, and we check the main claims against other sources.