Castile and León Day (Castile and León)

Castile and León Day is a holiday celebrated on 23 April in the autonomous community of Castile and León, a subdivision of Spain. The date is the anniversary of the Battle of Villalar, in which Castilian rebels called Comuneros were dealt a crushing defeat by the royalist forces of King Charles I in the Revolt of the Comuneros on 23 April 1521.

Castile and León is an autonomous community in northwestern Spain. Castile and León is the largest autonomous community in Spain by area, covering 94,222 km². It is, however, sparsely populated, with a population density below 30/km². While a capital has not been explicitly declared, the seats of the executive and legislative powers are set in Valladolid by law, and for all purposes that city serves as the de facto regional capital.