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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 The USCCB website currently has information that—as of a few days ago—has been superseded:

*  PDF Download • PREVIOUS RULING (superseded in October 2024)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

    Dom Pothier • Photo from 1904
    Dom Paul Cagin, in a 1904 publication (L’oeuvre de Solesmes dans la restauration du chant grégorien) made sure to include a beautiful image of Dom Pothier, the legendary abbot of St-Wandrille. Also shown is a very young Dom André Mocquereau. Auguste Pécoul—considered the spiritual “son” of Abbat Prosper Guéranger of Solesmes—wrote as follows on 24 June 1901: “To forestall any confusion, let us remember that there is just one Gregorian notation—that restored, according to the ancient manuscripts, by the eminent Abbot of Saint-Wandrille, Dom Pothier.” ✠
    —Jeff Ostrowski
    PDF • “3-Voice Motet” (Father De Laet)
    I believe 99% of our readers will recognize this hymn tune. Perhaps Father Edgard De Laet should have called it a ‘hymn’ instead of a ‘motet for three voices’—but he’s technically correct, since MOTET is defined as: “a short piece of sacred choral music, typically polyphonic and unaccompanied.” The even verses are for three voices, as you will see if you download the PDF score at #20245. The odd verses may be song a cappella SATB or unison with organ.
    —Jeff Ostrowski
    PDF Download • “Hymn for 2 Voices”
    Readers who click on this video will see that it starts with verses of the “Pange Lingua” hymn by Saint Thomas Aquinas (d. 1274) arranged for two voices. However, there’s a polyphonic refrain (“Tantum Ergo”) for three voices, taken from Kevin Allen’s Motecta Trium Vocum. If your choir is very small, this piece is for you! You can download the PDF score free of charge—and you can also utilize the rehearsal videos for each individual voice—by navigating yourself to #20323.
    —Jeff Ostrowski

Quick Thoughts

    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    “Reminder” — Month of January (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. Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

When we say: “The people like this” we regard them as unable to develop, as animals rather than human beings, and we simply neglect our duties in helping them towards a true human existence — indeed, in this case, to truly Christian existence.

— Professor László Dobszay (2003)

Recent Posts

  • Dom Pothier • Photo from 1904
  • PDF Chart • “Plainsong Rhythm”
  • PDF • “3-Voice Motet” (Father De Laet)
  • PDF Download • “Hymn for 2 Voices”
  • (January 2026) • “Children Singing Plainsong”

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