It isn't. And why is that?
Well, duh, it falls on a Monday!
From the good bishops of the good ol' US of A:
On December 13, 1991 the members of the National Conference of Catholic Bishops of the United States of American made the following general decree concerning holy days of obligation for Latin rite Catholics:Except...
In addition to Sunday, the days to be observed as holy days of obligation in the Latin Rite dioceses of the United States of America, in conformity with canon 1246, are as follows:
January 1, the solemnity of Mary, Mother of God
Thursday of the Sixth Week of Easter, the solemnity of the Ascension
August 15, the solemnity of the Assumption of the Blessed Virgin Mary
November 1, the solemnity of All Saints
December 8, the solemnity of the Immaculate Conception
December 25, the solemnity of the Nativity of Our Lord Jesus Christ
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.(For those o' you like me, "abrogated" is a word not used in everyday chit chat. I looked it up. It means "abolished.")
My question is simple: why?
And please don't tell me it's because the good bishops don't want to place on their flocks the "burden" of participating in the Holy Sacrifice of the Mass [gasp] two days in a row.
Seriously. Anybody able to explain the logic of this?