Although August 15 is the celebration of the Assumption of Mary, there is no obligation to attend Mass today in the United States. Among the complementary norms for the U.S. is the following:
Whenever January 1, the solemnity of Mary, Mother of God, or August 15,
the solemnity of the Assumption, or November 1, the solemnity of All
Saints, falls on a Saturday or on a Monday, the precept to attend Mass
is abrogated [SOURCE].
Now, I’ve had some folks write in asking whether there is an obligation to rest today. You might think that, for the general law regarding holy day obligations reads as follows:
Can. 1247 On Sundays and other holy days of
obligation, the faithful are obliged to participate in the Mass.Moreover, they are to abstain from those works and
affairs which hinder the worship to be rendered to God, the joy proper to the
Lord’s day, or the suitable relaxation of mind and body.
Since the complementary norm mentions the suspending of the obligation to attend Mass but not the obligation to abstain from certain works and affairs, you might conclude that the latter obligation is still in place.
Unfortunately, the situation is more complex than that. For a start, the canon is badly drafted. You’ll note that the canon refers to avoiding works and affairs that interfere with "the joy proper to the Lord’s day." Well, the Lord’s day is Sunday and Sunday only. Not other holy days. This raises a question of whether the second obligation specified in the canon is directed to Sundays or to all holy days.
The answer is that it does apply to other holy days; I’m just pointing out how sloppily the Church drafts its law on this subject so the reader will be put on guard against trying to read the law over-precisely when it comes to this stuff. The Church is painting with broad brush when it comes to the law on this topic. It hasn’t sat down and spelled matters out rigorously.
It’s really hard to imagine that the bishops would say "It’s asking too much to tell people they have to go to Mass on Monday when they just went on Sunday, but we will ask them to treat Monday just like Sunday in all other respects, with all the rest requirements that we haven’t preached on for forty years and when 99.44% of people are required by their employers to work on this day."
It’s not plausible that the bishops intended to put people into a multi-bind situation where they are NOT required to go to Mass BUT are required to rest EXCEPT for the fact that their employer requires them to work AND the people are almost totally unaware of the obligation to rest in the first place due to lack of preaching and knowing what the obligation even means in our culture. If it seems hard to you to imagine how you’d be expected to conduct yourself on such an overly complicated day, it’s for very good reasons and the same reasons suggest that that’s not what the bishops intended.
Thus it’s no surprise when one discovers that there is a recognition at the USCCB also that both
obligations are gone when August 15 falls on a Monday. The Bishops
Committee on Liturgy Newsletter simply says:
August 15 (the Assumption) is a day of obligation only when it falls on Tuesday, Wednesday, Thursday, Friday, or Sunday (35 Years of the BCL Newsletter, 1557).
It therefore appears that the most likely explanation for all this is that the U.S. bishops intend both obligations to be suspended when the day falls on a Monday (or a Saturday). They simply phrased themselves with customary sloppiness following the Vatican’s example.
At a minimum we have a doubt of law situation, and in that circumstance our old friend, Canon 14, kicks in to tell us:
Can. 14 Laws,
even invalidating and disqualifying ones, do not oblige when there is a doubt
about the law.
Bottom line, you don’t have to navigate the multi-bind kind of day mentioned above. Think about what God did for Mary and go to Mass if you want to, but don’t feel obligated to treat the day as a quasi-semi-maybe Sunday.
20