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:
This decree of the Conference of Bishops was approved and confirmed by the Apostolic See by a decree of the Congregation for Bishops (Prot. N. 296/84), signed by Bernardin Cardinal Gantin, prefect of the Congregation, and dated July 4, 1992.
It should be noted that the Ascension is celebrated on Sunday in many dioceses of the US (in accordance with a decision to allow this transfer), reducing the practical number to 5 in many places.
In the Eastern Catholic Churches, besides Sunday, the following are Holy Days: Christmas, Epiphany (Jan. 6), Ascension, Dormition (Aug. 15) and Apostles Peter and Paul (Jun. 29). Like the Code of Canon Law, the Code of Canons of the Eastern Churches provides that each Eastern Church may have particular law Holy Days and also, with the approval of the Holy See, suppress some on the universal list.