Day of Valdemar and Reunion Day
June 15, Sunday
According to legend, during the Battle of Lyndanisse in 1219 (in present-day Tallinn, Estonia), the Danish forces led by King Valdemar II were struggling. Suddenly, a red flag with a white cross (the Dannebrog) is said to have fallen from the sky, inspiring the Danish troops to victory. This event is considered the mythical birth of the Danish flag, which is one of the oldest national flags still in use.
Key aspects of Day of Valdemar:
- Celebrates the origin of the Dannebrog (Danish flag)
- Honors King Valdemar II and Danish history
- Often observed with flag-raising ceremonies and patriotic displays
Reunion Day (Genforeningsdag)
Reunion Day, or "Genforeningsdag" in Danish, is also observed on June 15. It marks the reunification of Southern Jutland (also known as North Schleswig) with Denmark in 1920, following a plebiscite after World War I.
After centuries of conflict between Denmark and Germany over the Schleswig region, the Treaty of Versailles allowed for a vote in the region. The northern part voted to rejoin Denmark, and the official reunification took place on June 15, 1920, when King Christian X rode across the old border on horseback, symbolizing the peaceful return of the territory.
Key aspects of Reunion Day:
- Commemorates the 1920 reunification of Southern Jutland with Denmark
- Celebrated with historical reenactments and cultural events
- Symbolizes national unity and peaceful resolution of conflict
Combined Observance
Since both holidays fall on June 15, they are often commemorated together. The day serves as a celebration of Danish identity, history, and unity. While not a public holiday with time off work, it is recognized with ceremonies, flag displays, and educational events across the country.