Today, Belgium celebrates the "King's Holiday" (Fête du Roi / Koningsfeest ). This beloved tradition, dating from 1866, honors the services rendered by the monarch to the nation. November 15 was chosen for this celebration as it is the name-day of Leopold (in the Germanic calendar) and of Albert (in the general calendar). Upon his accession to the throne in 1951, Baudouin I decided not to change the date, and neither has Albert II.
From 1944-1950, during the exile of Leopold III (and the regency of his brother, Prince Charles), the name "Dynasty Holiday" was used. This term, however, was erroneous, as noted in a circular from the Ministry of Interior in 1953.
According to custom, the King does not attend the public celebrations in his honor!
(Photo: The Royal Palace of Brussels by night. Credits)