International Children’s Book Day is a yearly event sponsored by the International Board on Books for Young People (IBBY), an international non-profit organization. Founded in 1967, the day is observed on or around Hans Christian Andersen’s birthday, April 2.
World Book Day or World Book and Copyright Day (also known as International Day of the Book or World Book Days) is a yearly event on 23 April, organized by UNESCO to promote reading, publishing and copyright.World Book Day was celebrated for the first time on 23 April 1995. 23 April is a symbolic date for world literature for on this date in 1616, Cervantes, Shakespeare and Inca Garcilaso de la Vega all died. It is also the date of birth or death of other prominent authors such as Maurice Druon, Haldor K.Laxness, Vladimir Nabokov, Josep Pla and Manuel Mejía Vallejo.