Greetings in German
I wonder how to say, "Happy German Unity Day!" in German. German Unity Day is Tag der Deutschen Einheit in German.
I think few Germans are fervently patriotic or nationalistic.
On the other hand, I wonder how many Americans celebrate Independence Day, for example -- in the sense of thinking of American Independence on that day, not just picnicking or setting off fireworks or doing other things that are not directly related to independence.
The 3rd of October is a public holiday which means that most Germans will not work or go to school on that day, and I'm sure most Germans are happy about that -- but I think only few people will actually celebrate that day in the sense that they specifically commemorate the reunification of Germany.