Queen Sonja's Day is celebrated on July 4 in Norway to honor the birthday of Queen Sonja, a beloved monarch known for her contributions to the arts and environmental advocacy. On this day, Norwegians express their appreciation by raising national flags and acknowledging her significant impact on society. The celebration includes cultural events, such as exhibitions and concerts, often featuring traditional Norwegian cakes and themed menus from local businesses. Social media engagement is encouraged, with individuals sharing facts about the Queen's life and artistic passions. The holiday reflects national pride and is supported by various organizations, including the Norwegian Royal Court and the National Museum of Art, Architecture and Design, which align with the Queen's interests.