The following comes from a May 13 Father Z’s Blog post:

The liturgical celebration of Ascension by the Latin Church has become a little confused in recent years.

In the post-Conciliar calendar used with the Novus Ordo editions of the Missale Romanum for this coming Sunday we ought – in my opinion – to be observing the 7th Sunday of Easter. Ascension Thursday should fall, appropriately, on Thursday. However, by the same logical that dislocated Epiphany (“Twelfth Night”) from its proper place twelve days, appropriately, after Christmas, some years ago the Holy See allowed bishops to transfer the celebration of Ascension Thursday to the following Sunday.

I call this liturgical caper “Ascension Thursday Sunday”.

Those who are participating at Holy Mass with the 1962MR avoid all this. Ascension Thursday is, logically, on Thursday.

Since we should, when examining issues, pay attention to cult, code and creed, and since we have looked at the theological point of the liturgical observance of the Ascension (creed and cult) let’s look also at some law (code).

In the 1983 Code of Canon Law, can. 1246, Ascension Thursday is indicated as one of the few Holy Days of Obligation.

You fulfill your obligation by going to Mass either Ascension Thursday or the Vigil of Ascension.

The bishops who did transfer the feast to Sunday were, I am sure, hoping to expose more people to the mystery of the Ascension of the Lord. Probably included in that calculation was also the notion that it is tooo haaard for people to go to Mass also on Thursday. “Mass twice in a week? Tooo haaard!”

I am no doubt under the the influence of having read so much St. Augustine. My present view of humanity suggests that when Holy Mother Church lowers expectations regarding the liturgy, people get the hint and lower their own personal expectations of themselves. They get the hint that the feast just isn’t that important. As a matter of fact, maybe none of this Catholic stuff, with all these rules, is that important. This is what happened with lowering expectations about Friday abstinence (hardly anyone pays attention to it anymore), going to confession regularly and confession all mortal sins, the Eucharistic fast, dressing appropriately for Mass, etc. etc. etc. If you change how people pray (or tell them they don’t have to) you change the way people believe. There is a reciprocal relationship between our prayer and our belief. Lex ordandi – Lex credendi.

I am left with the opinion that the option to dislocate such an important and ancient feast falls into the category of a Really Bad Idea™. As a matter of fact, it isn’t a Really Bad Idea™ just because it could undermine our Catholic identity, it is also a Really Bad Idea™ because it smacks of arrogant novelty.

Celebration on Thursday reflects the ancient practice of the Churches of the East and West alike. We read in Holy Scripture that nine days, not six, intervened between the Lord’s physical ascent to the Father’s right hand and the descent of the Holy Spirit at Pentecost. If Pentecost was the 50th day, seven weeks – as the ancients counted the starting day itself is included so you get 50 rather than 49), then Ascension Thursday was fixed at the 40th day after Easter.

The observance of Ascension Thursday was fixed from about the end of the 4th century. In the Latin West, St. Augustine of Hippo (+430) called it Quadragesima (“fortieth”) Ascensionis. In the Greek East, St. Gregory of Nyssa spoke of it in 388. That’s only a 16 century tradition.

And how, I ask you, is transferring Ascension Thursday to Sunday in conformity with the “spirit of Vatican II” as actually printed in the documents of Vatican II?