In 2018, the Solemnity of the Immaculate Conception falls on a Saturday. This is a holy day of obligation for the Ordinariate communities in the United States. Since it is the patronal feast of the United States, is not abrogated when it falls on a Saturday. Catholics have two obligations to fulfill on this weekend -- the holy day and Sunday. Using the chart below, one blue obligation and one violet obligation must each be fulfilled separately. Both obligations can be fulfilled on Saturday, just not both at the same Mass, and only in the times indicated.
The Saturday evening celebration should be the Mass of the Second Sunday of Advent, according to the Table of Precedence. For the Saturday evening Mass, either obligation can be fulfilled, regardless of the liturgical celebration.
Holy Mass for the Solemnity of the Immaculate Conception will be offered at St. Mary's at the following times:
6.00PM Friday, 7 December (Roman Missal)
9.00AM Saturday, 8 December (Divine Worship), with the Rite of Reception into Full Communion of the Carlson Family, the Sacrament of Confirmation, and First Communions. Girls are invited to wear white dresses and bring flowers for Mary to this Mass. See this post for more information.