Q: Our bishop has told us that when the Assumption (August 15) falls on a Saturday, and the parish has a regularly scheduled Saturday evening mass, the mass should be for the Assumption, not for the 20th Sunday in Ordinary Time. Is this correct?
A: No. In the United States the Assumption is not a holyday when it falls on a Saturday (or a Monday). In the Liturgy of the Hours, Evening Prayer II of the Assumption is prayed on Saturday night, but the rule for the mass is different because Sunday carries the obligation, and the Assumption-on-Saturday does not.