A Solemnity is the highest liturgical rank of a feast in the ecclesiastical calendar, followed by Feast, Memorial, and Optional Memorial.
Mary has many feast days throughout the year but the official Solemnity of Mary is celebrated on January 1.
In the United States many Catholics celebrate 3 holy days. These holy days consist of Solemnity of the Virgin Mary, Feast of the Assumption, and Solemnity of All Saints. If you would like to learn about additional holy days in Catholicism see the link below.
The Solemnity of the Nativity of Our Lord.
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, 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.
The Solemnity of Saints Peter and Paul, June 29, is not observed in the United States.
Solemnity of Christ the King
No, it is not a memorial, it is a Solemnity - a major feast.
Catholic AnswerIt is a Solemnity, not a feast (Solemnity ranks higher than a feast and contains a Gloria and a Creed). The Solemnity of Peter and Paul, Apostles falls on the 29th of June each year. Both a principal patrons of Rome and are mentioned in the Roman Canon. Peter was martyred in Rome in 64, Paul in 67. The earliest record of this date for the Solemnity is in the Depositio Martyrum(258). From the Order of Prayer in the Liturgy of the Hours and Celebration of the Eucharist 2010
Many hundreds. Practically every day of the year is a Feast day except when the day happens to be declared a solemnity such as Good Friday. On those such days, the Feast Day is usually differed. Why so many? Saints all have feast days associated with them. Not every Catholic celebrates every Saint's feast day, it is up to the discretion of the Catholic.
The Solemnity of the Immaculate Conception falls on December 8.
The Baptism of the Lord is celebrated on the feast: the Solemnity of the Epiphany, usually celebrated in the Roman church on 6th of January.
January 1 is a Solemnity, a major feast day, in the Catholic Church -the Solemnity of the Blessed Virgin Mary.