The birthday of Prince Joachim of Denmark is observed every June 7. This day is marked in Denmark with flag-raising ceremonies and various special events, celebrating the younger son of Queen Margrethe II and the younger brother of King Frederik X. Born in Copenhagen in 1969, Prince Joachim has a background in military education and agrarian economics, and he has held various roles, including working as a defense industry attaché at the Danish Embassy in Washington, D.C. Although not an official holiday, the day is recognized as significant in the Danish calendar. Prince Joachim has been married twice and has four children, and following his brother's ascension to the throne in 2024, he is currently fifth in line for the Danish throne.