St. John XXIII’s feast day is October 11. In 2026 it falls on Sunday. John XXIII surprised the Curia by calling Vatican II and surprised the world by warmth he called the medicine of mercy. Born in Bergamo, he served as nuncio in Bulgaria, Turkey, and France before the papacy. Italians called him the Good Pope, yet his courage reshaped the twentieth-century Church.
If you searched St. John XXIII feast day, St. John XXIII, St. John XXIII Oct 11, this is the 2026 feast-day guide: the life, the doctrine this memorial is for, the liturgy, and what Catholics actually do today. St. John XXIII is remembered as the "Good Pope" who convened Vatican II and changed the Church forever. Patronage listed here: Popes, Italy, Vatican II, Church Renewal, Diplomats, Ecumenism. Angelo Roncalli, Pope who opened the Second Vatican Council. The standing biography remains at St. John XXIII — that URL is unchanged.
In 2026, October 11 falls on Sunday; the Sunday Mass of the Twenty-eighth Week in Ordinary Time takes precedence, and the optional memorial of St. John XXIII may be observed on another day per local calendar.
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When Is St. John XXIII’s Feast Day?
October 11 every year. In 2026 that is Sunday, October 11. Liturgical rank on this guide: Optional Memorial. It is not a holy day of obligation in the United States. If the date is a Sunday, the Sunday celebration normally takes precedence at Mass; keep the saint in the Liturgy of the Hours, in a votive Mass where allowed, or in family prayer.
People mix this date with other observances. Keep them straight:
| What you searched | The date | What it is |
|---|---|---|
| St. John XXIII feast day | October 11 (Sunday in 2026) | Optional Memorial — this guide |
In 2026 October 11 is Sunday. Sunday Mass takes precedence over this optional memorial unless a solemnity outranks even Sunday. Keep St. John XXIII in the Hours, a votive Mass where permitted, or at home.
A collect you can use today asks that we follow St. John XXIII as angelo Roncalli, Pope who opened the Second Vatican Council — not as a slogan, as a life.
Who Was St. John XXIII?
Angelo Giuseppe Roncalli was born on November 25, 1881, at Sotto il Monte, Bergamo. Ordained in 1904, he served in the Vatican diplomatic corps, including during World War II efforts to protect Jews. Elected pope on October 28, 1958, he announced the Second Vatican Council on January 25, 1959.
He published Pacem in terris and the Journal of a Soul before dying on June 3, 1963. Pope Francis canonized him alongside John Paul II on April 27, 2014. His feast is October 11.
By 1905, Roncalli was appointed to act as secretary for his bishop, Giacomo Radini-Tedeschi. He continued working as the bishop's secretary until the bishop died in August 1914. The bishop's last words to Roncalli were, "Pray for peace." These words would prove prophetic as the world teetered on the brink of World War I. Italy was eventually drawn into the war and Roncalli was drafted into the Italian Army as a stretcher bearer and chaplain, serving with distinction until his discharge in 1919.
After the war, Roncalli was appointed to be the Italian president of the Society for the Propagation of the Faith, handpicked by Pope Benedict XV. This position gave him valuable experience in the Church's missionary work and international relations. In February 1925, Roncalli was summoned to the Vatican and given a new mission as Apostolic Visitor to Bulgaria. Later, he was appointed apostolic delegate to Turkey and Greece and made archbishop of Mesembria.
On October 11 the Church is not archiving a celebrity. She is putting St. John XXIII in front of you as angelo Roncalli, Pope who opened the Second Vatican Council. Read the dates. Then pray. The standing biography remains at St. John XXIII — life, legacy, and feast. That URL is unchanged.
Angelo Roncalli and the Council He Opened
St. John XXIII is remembered as Angelo Roncalli, Pope who opened the Second Vatican Council. Pastoral gentleness and bold reform can live in the same shepherd.
John XXIII surprised the Curia by calling Vatican II and surprised the world by warmth he called the medicine of mercy. Born in Bergamo, he served as nuncio in Bulgaria, Turkey, and France before the papacy. Italians called him the Good Pope, yet his courage reshaped the twentieth-century Church.
Roncalli trusted the Spirit to renew liturgy, ecumenism, and the laity without abandoning Catholic faith. This is not a private hobby of specialists. It is why the calendar still names October 11.
On this feast the Church is not only telling a story; she is keeping a school. St. John XXIII's greatest legacy is undoubtedly his decision to convene the Second Vatican Council, which opened on October 11, 1962. This council, which he called "aggiornamento" (updating), marked a turning point in the history of the Catholic Church. Vatican II brought the Church into dialogue with the modern world, emphasizing the importance of ecumenism, religious freedom, and the role of the laity in the Church. The council's documents continue to guide the Church's mission in the contemporary world, making John XXIII one of the most influential popes in recent history.
Pastoral Gentleness Is Not Soft Doctrine
Patronage listed on this site: Popes, Italy, Vatican II, Church Renewal, Diplomats, Ecumenism. Patronage is a relationship of prayer, not a charm. Ask St. John XXIII, then do the next just thing.
St. John XXIII is remembered as the "Good Pope" who convened Vatican II and changed the Church forever. Category on our saints index: Modern Saints. That label is a door, not a cage — martyrs teach the baptized, doctors teach the simple, virgins teach the married.
John XXIII's papacy was marked by an unprecedented level of accessibility and warmth. He broke with many papal traditions, visiting prisons, hospitals, and the poor, showing that the Pope was not a distant figure but a shepherd who cared for his flock. His famous "moon speech" to children, where he told them to go home and give their mothers and fathers a hug, endeared him to people around the world. His approachability and genuine concern for people earned him the affectionate title "the Good Pope" and set a new standard for papal ministry.
During his time as apostolic delegate in Turkey and Greece, John XXIII demonstrated extraordinary courage and compassion in saving thousands of Jews from the Holocaust. His efforts to rescue Jews from Nazi persecution earned him the title "Righteous Gentile" and showed his commitment to human dignity and the protection of the vulnerable. This aspect of his legacy continues to inspire the Church's work for justice and human rights.
If you only have five minutes, skip the folklore and keep the sentence: St. John XXIII, pray for us. Then open John 15 and read until you hit a line you can obey today.
Pope Francis canonized him alongside John Paul II on April 27, 2014. His feast is October 11. You do not have to travel to keep October 11. The calendar brings the shrine to the parish and the parish to the table.
What This Feast Is Not
John XXIII is not a license to treat Vatican II as a rupture from the faith he professed. Roncalli opened a council; he did not invent a new Church. Pastoral warmth without the creed is not his feast.
If you searched St. John XXIII today, keep angelo Roncalli, Pope who opened the Second Vatican Council. Skip the souvenir version. The 2026 work is still Mass if you can, Scripture, and one mercy that costs you.
Scripture for October 11
These chapters are not random captions. They are the Bible this witness still opens. Read in the Douay-Rheims Catholic Bible. One chapter prayed is enough; three is a feast.
- John 15 — Read this chapter as the Scripture the memorial is for, not as a caption. Pastoral gentleness and bold reform can live in the same shepherd.
- Matthew 5 — The Beatitudes name the kind of life St. John XXIII actually lived. Pastoral gentleness and bold reform can live in the same shepherd.
- Isaiah 2 — Read this chapter as the Scripture the memorial is for, not as a caption. Pastoral gentleness and bold reform can live in the same shepherd.
How to Celebrate October 11, 2026
- Go to Mass — Go to Sunday Mass. St. John XXIII’s optional memorial yields to Sunday in the universal calendar; keep the saint in the Liturgy of the Hours, a votive Mass where allowed, or family prayer. If the parish uses another Mass, add a private collect.
- Read the biography at St. John XXIII so this page does not replace the vita.
- Read one paragraph from Pacem in terris and apply it to a current conflict.
- Perform a small work of mercy in Roncalli's spirit of jovial charity.
- Pray one chapter of John 15 in the Douay-Rheims Catholic Bible.
- Say the invocation. Out loud: St. John XXIII, pray for us. Once is enough if you mean it.
If you cannot do six things, do the invocation and one merciful act. St. John XXIII’s whole spirituality can fit in a kitchen before midnight.
Readings and the Prayer of the Church
When this optional memorial is kept, the Missal ordinarily allows the Common of Holy Men and Women. At home, pray the chapters listed above — especially John 15 — then this collect. At Mass, use the official texts, not a blog’s paraphrase.
Collect. O God, who gave your Church St. John XXIII as Angelo Roncalli, Pope who opened the Second Vatican Council, grant that we may learn from this feast how pastoral gentleness and bold reform can live in the same shepherd. Through our Lord Jesus Christ, your Son, who lives and reigns with you in the unity of the Holy Spirit, God, for ever and ever. Amen.
The English collect of a memorial, when the Missal provides one, will be more exact than this home prayer. Use both if you need them. Trust and charity in act — not a slogan.
A Prayer You Can Use Today
"O St. John XXIII, the Good Pope who convened Vatican II and brought renewal to the Church, pray for us who call upon your intercession. Help us to have the same openness to the Holy Spirit that you showed throughout your papacy. Teach us to be merciful and accessible to others, and to work for peace and dialogue in our world. Through your powerful intercession, may we be blessed with the grace to be agents of renewal in the Church and to show the same compassion and courage that you demonstrated. Amen."
Frequently Asked Questions
When is St. John XXIII’s feast day in 2026?
Sunday, October 11, 2026. The calendar date is fixed; the weekday changes each year.
Is this a holy day of obligation?
No. In the United States this optional memorial does not bind like Christmas or the Immaculate Conception. Come to Mass if you can. Do not invent a precept the bishops have not given.
Does Sunday cancel St. John XXIII in 2026?
At Mass, Sunday (or a solemnity) takes precedence over this optional memorial. You still keep St. John XXIII in the Hours, a votive Mass where allowed, or at home. The date does not move off October 11 in popular devotion.
What is St. John XXIII the patron of?
Popes, Italy, Vatican II, Church Renewal, Diplomats, Ecumenism. Patronage is a relationship of prayer, not a charm and not a substitute for the sacraments. Ask, then act.
How do you pray on this feast day?
Mass if you can, one chapter of Scripture, one concrete mercy, and the words St. John XXIII, pray for us. Details are in the list above.
Why does the Church keep St. John XXIII at all?
Because angelo Roncalli, Pope who opened the Second Vatican Council is still medicine. Pastoral gentleness and bold reform can live in the same shepherd. The calendar is a school, not a museum.
What should I avoid treating this feast as?
John XXIII is not a license to treat Vatican II as a rupture from the faith he professed. Roncalli opened a council; he did not invent a new Church. Pastoral warmth without the creed is not his feast.
What is the difference between this guide and the saint page?
This page is the 2026 feast-day article — date, liturgy, how to keep today, FAQ. /saints/st-john-xxiii/ is the standing biography. Neither URL has been renamed.
Related pages on Catholic Bible Online
- St. John XXIII — life and legacy
- Saints directory · Saint of the Day
- Catholic calendar · Catholic Bible (Douay-Rheims)
- Prayers · Daily Bible verse
Keep the Day
The Church names October 11 so that St. John XXIII can still teach. Pray. Read. Do one merciful act before midnight. Trust is a decision, not a mood.
St. John XXIII, pray for us.
Read: biography · John 15 · more saints