A solemnity is one of the highest-ranking celebrations in the Roman calendar and marks a mystery of the Lord, the Blessed Virgin Mary, or a saint of major significance.
The liturgical color for this observance is White. Purity, joy, and major celebrations of the Lord and saints who are not martyrs.
Advent is the season of watchful preparation for the Nativity of the Lord and for Christ’s coming in glory.
2nd week of Advent
Why this day matters
The Immaculate Conception celebrates Mary’s preservation from sin by the grace of Christ.
Immaculate Conception of the Blessed Virgin Mary is observed on Tuesday, December 8, 2026 in the Advent season. It is kept as a solemnity with the liturgical color White. The Immaculate Conception celebrates Mary’s preservation from sin by the grace of Christ. Saints: The Blessed Virgin Mary. Holy day obligations differ by conference and country, so local guidance should be checked.
Saints connected with this date
Holy day note: Holy day obligations differ by conference and country, so local guidance should be checked.