This question is covered in OCM 34, which we discussed here a little while ago. It’s repeated as a rubric and lifted closely worded from that prior paragraph in the introduction:
54. On those days when Ritual Masses are permitted, the Mass “For The Celebration of Marriage” is used with the proper readings.
However, on those days listed in nos. 1‑4 of the Table of Liturgical Days, the Mass of the day is used, retaining the Nuptial Blessing in the Mass, and, if appropriate, the proper formula for the final blessing.
If, however, during Christmas and Ordinary Time, the parish community participates in a Sunday Mass during which Marriage is celebrated, the Mass of the Sunday is used.
Lifting word-for-word from my previous post, those days numbered one through four are as follows:
- Paschal Triduum
- Sundays and major feasts in the seasons of Advent, Lent, and Easter
- Solemnities of the Lord, Mary, or saints.
- Observances of patrons appropriate to the nation or city, parish, or the parish’s dedication anniversary. Also, the founder of a religious order connected to the community.
It is a myth that couples cannot be married on these days. Actually, they can, except for Good Friday and Holy Saturday. But not in context of a wedding Mass. To be sure, most couples want the full wedding Mass. But some who have a particular date in mind, probably wouldn’t mind having readings of the day imposed on the liturgy. That can be worth asking, once in a while.
The text cited in red is from the English translation of The Order of Celebrating Matrimony © 2013, International Commission on English in the Liturgy Corporation. All rights reserved.