World Book Day History World Book Day has its roots in a Spanish tradition called "El Día del Libro" or "The Day of the Book ," which was established in 1926 to honor the Spanish writer Miguel de Cervantes, who died on April 23, 1616. April 23rd also happens to be the date of birth or death of several other prominent writers, including William Shakespeare, Inca Garcilaso de la Vega, and Josep Pla. In 1995, UNESCO (United Nations Educational, Scientific and Cultural Organization) decided to ... Learn about World Book Day , a UNESCO-organized event on April 23 to celebrate books and reading. Find out how to join the global celebration with book giveaways, challenges, events, and more. World Book Day — Know Its History, Significance, And The Theme For 2025 World Book Day falls annually on April 23 that pays tribute to the written word, celebrates the joy of reading, and emphasises the importance of literature in our lives. World book day 2025: This day is celebrated on April 23 every year. It is observed globally to promote the love for reading and writing.