Holy days of Obligation - Appointed feasts in the Reykjavík Diocese
Every Catholic older than seven years is obligated to go to church and participate in mass these following days, as far as not prevented by disease, age, distance or bad weather.
Feast of Mary, Mother of God (January 1).
Feast of Ascension of our Lord Jesus Christ. Always on a Thursday in the parish churches.
All Saints Mass (November 1).
Christmas Day (December 25).
Some of the major festivals of the liturgical year in Iceland are moved to the Sunday before or after:
Corpus Christi - Sunday after Trinity Sunday.
Dedication Day of Kristskirkja cathedral in Landakot - Sunday after the inaugural day (July 23).
Assumption of the Virgin Mary to Heaven (August 15).