Celebrations of the liturgical year in the Catholic Church are divided into three main categories: solemnities, feasts and memorials.
- Solemnity
A solemnity in the liturgical year is a feast day of the highest rank celebrating a mystery of faith such as the Trinity, an event in the life of Jesus, the Blessed Virgin Mary, or specific saints. The observance begins with the vigil on the evening before the actual date of the feast.

- Feast
Feast days in the liturgical year are important and assigned for each and every canonized saint. The saints are remembered on their individual feast days with special mention, prayers, and possibly a scripture reading.

- Memorial
Next are memorials which commemorate the spiritual life of a saint or saints. Memorials are marked in the general liturgical calendar.

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Feast of Saint Sylvester I, Pope
Read more: Feast of Saint Sylvester I, PopeDate: December, 31 Little is known about the early life…
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Feast of Saint Anysia
Read more: Feast of Saint AnysiaDate: December, 30 Anysia was a young woman who lived…
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Feast of Saint Thomas Becket
Read more: Feast of Saint Thomas BecketDate: December, 29 Thomas Becket (also called Thomas of London)…
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Feast of the Holy Innocents, Martyrs
Read more: Feast of the Holy Innocents, MartyrsDate: December, 28 When Herod realized that he had been…
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Feast of Saint John, The Apostle and Evangelist
Read more: Feast of Saint John, The Apostle and EvangelistDate: December, 27 Saint John the Apostle, the son of…
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Feast of Saint Stephen, The First Martyr
Read more: Feast of Saint Stephen, The First MartyrDate: December, 26 Saint Stephen was one of the first…
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Solemnity of the Nativity of the Lord: Christmas Day
Read more: Solemnity of the Nativity of the Lord: Christmas DayDate: December, 25 In those days a decree went out…
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Feast of Saint Irmina and Adele
Read more: Feast of Saint Irmina and AdeleDate: December, 24 Saint Irmina or Irma was a Benedictine…
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Feast of Saint John of Kanty
Read more: Feast of Saint John of KantyDate: December, 23 Jan Kanty (John Cantius in English) was…
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Feast of Blessed Jacopone da Todi
Read more: Feast of Blessed Jacopone da TodiDate: December, 22 Jacomo or James, was born a noble…
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Feast of Saint Peter Canisius
Read more: Feast of Saint Peter CanisiusDate: December, 21 On October 31, 1517, Father Martin Luther,…
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Feast of Saint Dominic of Silos
Read more: Feast of Saint Dominic of SilosDate: December, 20 Born in Cañas, La Rioja, to a…