"happy day" in German happy day Glückstag Freudentag Detailed translations for "happy day" happy day happy day der Glückstag{masculine} This sure is a happy day to me. Source: opensubtitles.org Corpus by OPUS Request review Das ist ein Glückstag für mich. happy day(also: joyful day) der Freudentag{masculine} Oh. It was a happy day in Washington. Source: opensubtitles.org Corpus by OPUS Request review Es war ein Freudentag in Washington.