How about Union day?
It's either "Unification Day" (accepted) or "the Day of Unification" (refused and reported), but it's not "the Unification Day". We don't use the article with names like this.
Has anyone else noticed that the last 5th of this course has absolutely terrible sentences, and translations that make no sense? It is like they got tired and gave up.
2019-11-25 In English, a special day with a name is not "the" [X] Day, it is simply [X] Day. Reported as "something else". (However, DL did not reject my answer without "the".)
In my ignorance I hadn't been aware that Romania had been divided... now I wonder if Germany has a Unification Day, because that's a country unified in my lifetime.
That's a bit off topic but yes, it's October 3.
Este în afară subiectului; dar da, este 3 octombrie.