Explanation:

• The World Book and Copyright Day (also known as ‘International Day of the Book’ and ‘World Book Day’), is an annual event organized on April 23 by the United Nations Educational, Scientific and Cultural Organization (UNESCO) to promote reading, publishing, and copyright.
• The first World Book Day was celebrated on 23 April 1995.
• April 23 is chosen because it marks the birth and death of several prominent authors. For instance, William Shakespeare, Miguel de Cervantes, and Josep Pla died on April 23 and Manuel Mejia Vallejo and Maurice Druon were born on April 23.