Q: Our parish patronal feast falls within a few weeks of the anniversary of the dedication of our parish church. Can we combine both celebrations on a Sunday in Ordinary Time when we are having a festival?
A: Here’s paragraph 58 from the Universal Norms on the Liturgical Year and the Calendar:
“For the pastoral good of the faithful, it is permitted to observe on Sundays in Ordinary Time those celebrations that fall during the week and that are agreeable to the devotion of the faithful, provided the celebrations rank above that Sunday in the Table of Liturgical Days. The Mass of such celebrations may be used at all the celebrations of Mass at which the people are present.”
Honestly, it doesn’t say “nearest Sunday,” although that seems to be implied. I’m going to say you can make a case for transferring one of these to a Sunday that isn’t the nearest one.
The problem with transferring both of them is that they are two separate liturgies from different places in the missal, each ranking as a solemnity. They cannot be combined any more than Christmas and Epiphany can be combined. They each deserve independent celebration.