In 1995 UNESCO decided that the World Book and Copyright Day would be celebrated on 23 April, as the date is also the anniversary of the death of William Shakespeare and Inca Garcilaso de la Vega, as well as that of the birth or death of several other prominent authors.
Pada tahun 1995, UNESCO memutuskan Hari Buku Sedunia dan Hari Hak Cipta Sedunia dirayakan pada tanggal 23 April, sebab tanggal tersebut juga merupakan hari kematian William Shakespeare dan Inca Garcilaso de la Vega, serta hari lahir atau kematian beberapa penulis terkenal lain. ^ "What is World Book Day?".