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Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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Views from the Choir Loft

“This Change Blew My Mind” • Confusion: Is 9 December 2024 a Holy Day of Obligation?

Jeff Ostrowski · October 15, 2024

JUST GOT OFF the telephone with someone who works closely with the USSCB’s “Canonical Affairs Committee” as well as the USCCB’s “Committee on Divine Worship.” Over the telephone, he confirmed something that’s quite surprising—at least to me. A change was made by the USCCB a few days ago. This year, the feast of the IMMACULATE CONCEPTION falls on a Sunday. Normally, that feast would be “bumped” or “moved” or “transferred” to the next day (9 December) and the obligation to assist at Mass and refrain from unnecessary servile work would not be transferred. But this has been changed. The USCCB website currently has information that—as of a few days ago—has been superseded:

*  PDF Download • PREVIOUS RULING (superseded in October 2024)

Surprising Modification • A few days ago—and nobody seems quite certain of the precise day—the USCCB made a change. A notice has appeared on a special website only accessible by the bishops. This alteration by the USCCB seems to have been the result of an inquiry sent by Bishop Thomas Paprocki of the Diocese of Springfield, Illinois. Below is what the Vatican wrote:

*  PDF Download • Vatican Letter to Bishop Paprocki (Springfield, IL)

The Results • Because of this modification, the obligation to assist at Mass and refrain from unnecessary servile work will be transferred in 2024—along with the feast of the IMMACULATE CONCEPTION—to Monday, 9 December 2024. If memory serves, bishops have the authority to dispense people from holy days of obligation. Therefore, I urge readers to investigate the situation in their own dioceses.

(1 of 2) Random Thoughts • I doubt anyone’s interested in my opinion about these matters. However, it’s peculiar to see Bishop Paprocki writing to the Vatican vis-à-vis USA holy days of obligation. After all, the bishops of each country—not Vatican bureaucrats—decide which holy days of obligation are to be observed in their territories. For example, the feast of the EPIPHANY (a cardinal feast) is a holy day of obligation in many countries, but I don’t believe it’s ever been a holy day of obligation in the United States.

(2 of 2) Random Thoughts • According to the liturgical calendar of 1962, the feast of the IMMACULATE CONCEPTION “replaces” or “supplants” or “annihilates” the 2nd Sunday of Advent when it falls on a Sunday. But those who attend Mass in the Extraordinary Form are bound by the current Code of Canon Law—not some previous code of Canon Law. That means those who attend EF Masses are obligated to assist at Mass and refrain from unnecessary servile work on 9 December 2024, which is “Monday in the 2nd Week of Advent” according to the 1962 calendar. Most priests who celebrate Mass according to the 1962 MISSALE ROMANUM will probably not celebrate the feast of the IMMACULATE CONCEPTION on 9 December, although (in my humble opinion) that would make the most sense. I suppose somebody could say: “But that’s not traditional, Jeff, and we adhere to the tradition.” The problem is, I could name tons of instances in which TLM priests do not adhere to “tradition.” For example, offering Mass in the evening is not traditional. Neither is it “traditional” to distribute Holy Communion to the congregation during Solemn Mass, which we have discussed many times. But I digress…

Mind Blown! • For what it’s worth, the USCCB expert told me over the telephone that this modification—especially being made at such a late date—literally blew his mind. There’s already great confusion regarding holy days of obligation, especially with the whole “MONDAY-SATURDAY” business. Some Catholics find it bizarre that the feast of the IMMACULATE CONCEPTION is not important enough to supplant a Sunday in Advent (as it does in the EF), yet it is important enough for its obligation to be “transferred.”

Again, I urge each reader
to research the situation
regarding 9 December 2024
in your particular territory.

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

Filed Under: Articles, PDF Download Tagged With: Bishop Thomas Paprocki, Bishop Thomas Paprocki Springfield Illinois, Canonical Affairs Committee Members, Paprocki USCCB Canonical Affairs Committee Last Updated: January 28, 2025

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About Jeff Ostrowski

Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He resides with his wife and children in Michigan. —(Read full biography).

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Corpus Christi Watershed

President’s Corner

    “Reminder” — Month of April (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    Simplified Accompaniment (Easter Hymn)
    Number 36 in the Brébeuf Hymnal is “At the Lamb’s high feast we sing,” an English translation for Ad Cenam Agni Próvidi (which was called “Ad Régias Agni Dapes” starting 1631). As of this morning, you can download a simplified keyboard accompaniment for it. Simply click here and scroll to the bottom. Many organists are forced to serve simultaneously as both CANTOR and ACCOMPANIST. In spite of what some claim, this can be difficult—which explains why choirmasters appreciate these simplified keyboard accompaniments. Sadly, many readers will click that link but forget to scroll to the bottom where the simplified PDF file is located.
    —Jeff Ostrowski
    PDF Download • “Quasi Modo Sunday”
    The Introit for “Quasi Modo Sunday” (12 April 2026) is particularly beautiful. The musical score can be downloaded as a PDF file, and so can the organ accompaniment. The official language of the Catholic Church is Latin (whereas Greek is our mother tongue). Vatican II said Gregorian Chant must be given “first place” under normal circumstances. As a result, some parishes will rightly sing the authentic version. On the other hand, because so many USA dioceses disobey the mandate of Vatican II, some musicians sing plainsong in the vernacular. I have attempted to simultaneously accompany myself on the pipe organ while singing the English version. Although very few take advantage of it, the complete Proprium Missae is posted at the flourishing feasts website.
    —Jeff Ostrowski

Quick Thoughts

    PDF Download • “Anima Christi”
    I received a request for an organ accompaniment I created way back in 2007 for the “Anima Christi” Gregorian Chant. You can download this PDF file which has the score in plainsong followed by a keyboard accompaniment. Many melodies have been paired with “Anima Christi” over the centuries, but this is—perhaps—the most common one.
    —Jeff Ostrowski
    PDF • “Liturgical Law” (467 Pages)
    On Good Friday during the middle ages, the pope privately recited THE ENTIRE PSALTER. If you don’t believe me, see for yourself by reading this passage by Dom Charles Augustine Bachofen (d. 1943). His famous book—called “Liturgical Law: A Handbook Of The Roman Liturgy”—was published by the Benjamin Herder Book Company, which was the American arm (operating out of St. Louis, Missouri) of one of the world’s most significant Catholic publishers. Dom Charles Augustine Bachofen was born in Switzerland but spent his career between the Benedictine monasteries at Conception (Missouri) and Mount Angel (Oregon). His 1931 masterpiece, Liturgical Law can be downloaded as a PDF file … 467 pages!
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 24 March 2026
    How well do you know your Gregorian hymns? Do you recognize the tune inserted into the bass line on this score? For many years, we sang the entire Mass in Gregorian chant—and I mean everything. As a result, it would be difficult to find a Gregorian hymn I don’t recognize instantly. Only decades later did I realize (with sadness) that this skill cannot be ‘monetized’… This particular melody is used for a very famous Gregorian hymn, printed in the LIBER USUALIS. Do you recognize it? Send me an email with the correct words, and I promise to tell everybody I meet about your prowess!
    —Jeff Ostrowski

Random Quote

“Ordained a diocesan priest on 7 October 1827, Guéranger was quickly named a canon (a member of the cathedral chapter of Tours). Around 1830, he demonstrated his interest in the liturgy when he began to use the Roman Missal and texts for the Divine Office, unlike many of his colleagues, who still made use of the diocesan editions commonly in use in pre-Revolutionary France.”

— Source unknown

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