In the course of some research as a (non-Catholic) independent scholar, I happened upon a report of a “triduum” proclaimed by the pope on Feb. 2-4, 1945. I’m trying to learn the reason for it. The news article, in the NY Times, didn’t say.
I looked up “triduum” online and the only material I find refers
to the Easter triduum, written as Triduum, as if it’s the only kind.
So I did a global search in a major newspaper archive and found numerous instances of what might be called “generic” triduums. Evidently one can be declared by a bishop for specific local reasons, such as the opening of a new church.
To compound the mystery, the one proclaimed by the pope in 1945 was reported only in the NY Times, not in any of the newspapers in the archive. Its date was 12 days before Ash Wednesday that year. So…what might have been the occasion?