Title: Holy day of obligation
Content: The Feast of the Epiphany to the Sunday that falls between 2 and 8 January; if January 6 falls on Sunday there is no B date, ; The Feast of the Ascension of Our Lord, which always falls on a Thursday, to the following Sunday; ; The Solemnity of the Most Holy Body and Blood of Christ to the following Sunday. In Vatican City, but not in the rest of the Diocese of Rome, Sundays and all 10 days listed in canon 1246 are observed as holy days of obligation. This is also the case in the Diocese of Lugano (covering the Swiss canton of Ticino), 
Title: Roman Catholic Archdiocese of Los Angeles
Content: Assumption of the Blessed Virgin Mary, August 15 ; Exception: If August 15 falls on a Saturday or Monday, there is no obligation to attend Mass. ; All Saints, November 1 ; Exception: If November 1 falls on a Saturday or Monday, there is no obligation to attend Mass. ; Immaculate Conception, December 8 ; Exception: If December 8 falls on a Sunday, the solemnity is transferred to the following Monday and there is no obligation to attend Mass. ; Nativity of Our Lord Jesus Christ, December 25 As directed by the U.S. Conference of Catholic Bishops' Committee on the Liturgy and the Ecclesiastical Province of Los Angeles, the archdiocese annually observes four holy days of obligation. The Catholic Church currently recognizes 10 holy days, established in the 1917 Code 
Title: Holy day of obligation
Content:  ; 15 August: Solemnity of the Assumption of the Blessed Virgin Mary ; 1 November: Solemnity of All Saints The holy days of obligation for Latin Rite Catholics are indicated in canon 1246 of the 1983 Code of Canon Law: "Can. 1246. §1. Sunday, on which by apostolic tradition the paschal mystery is celebrated, must be observed in the universal Church as the primordial holy day of obligation. The following days must also be observed: the Nativity of our Lord Jesus Christ, the Epiphany, the Ascension, the Body and Blood of Christ, Holy Mary the Mother of God, her Immaculate 
Title: Holy Cross Sermons
Content: Michaelmas (September 29), ; Saint Nicholas Day (December 6), ; Christmas (December 24), ; Epiphany (called in Poland Three Kings’ Day, January 6), ; Feast of the Purification of the Virgin (February 2). The strips contain whole sermon for St. Catherine's Day (November 25), and parts of sermons for the following days:
Title: Holy day of obligation
Content: Epiphany ; Assumption of the Blessed Virgin Mary ; All Saints' Day ; Immaculate Conception of the Virgin Mary ; Christmas ; St. Patrick's Day includes the entire island of Ireland, i.e. both the Republic of Ireland and Northern Ireland. (See "Working holy days", above)
Title: Holy day of obligation
Content: Solemnity of Mary, Mother of God ; Epiphany ; St. Joseph's Day ; Feast of the Ascension ; Corpus Christi ; Feast of Saints Peter and Paul ; Assumption of the Blessed Virgin Mary ; All Saints Day ; Feast of the Immaculate Conception ; Christmas 
Title: Holy day of obligation
Content: Solemnity of Mary, Mother of God ; Epiphany ; Feast of Corpus Christi ; Christmas ; Feast of Our Lady of Altagracia ; Feast of Our Lady of Mercy 
Title: Holy day of obligation
Content: Solemnity of Mary, Mother of God ; Feast of the Ascension ; Assumption of the Blessed Virgin Mary ; All Saints' Day ; Christmas (See "Working holy days", above)
Title: Holy day of obligation
Content: Solemnity of Mary, Mother of God ; Epiphany ; Feast of the Ascension ; The Body and Blood of Christ ; Assumption of the Blessed Virgin Mary ; All Saints' Day ; Feast of the Immaculate Conception ; Christmas 
Title: Holy day of obligation
Content: Solemnity of Mary, Mother of God ; Epiphany ; Assumption of the Blessed Virgin Mary ; All Saints' Day ; Immaculate Conception of the Virgin Mary ; Christmas 

Question: what are the catholic holy days?
Answer: Name day.