Constitution Day in Spain is one of the country's national holidays and celebrates the approval of the Spanish constitution. The constitution was ratified on December 6th, 1978, signaling an end to almost 40 years of dictatorial rule under Francisco Franco and the start of a new democratic government. On this day, Spaniards all over the country commemorate the historic moment of their return to democracy.

This holiday is a day off for the general population, and people take this time to relax and spend time with their family members. Many stores and businesses are closed, but some bakers and food stores may stay open. In the lead up to the holiday, the Spanish government usually organizes readings of the constitution and exhibitions outlining the importance of the constitution and democratic values.

In addition to the national observance, several regional and local events take place throughout the country on Constitution Day. This includes public speeches, ceremonies, and workshops at schools and universities. Despite the festive nature of the holiday, it is also a day of solemn remembrance. This is a chance for the population to reflect on the progress that Spain has made since the implementation of its constitution, and the importance of democratic values in society.