On April 23 in Catalonia is celebrated the International Book Day in Catalonia on which is celebrated the anniversary of the patron Sant Jordi.   The Day of the Book meets love This day is one of the most original celebrations in Catalonia and takes place in the spring, April 23. It is a festival of popular character, combining culture and romance. It combines the celebration of the day of the book with the day of lovers. For the occasion, couples exchange gifts.