On May 1 the British celebrate the end of the colder weather and the hope for a nice summer. They have lots of May Day traditions, one of them is to wish a happy day with an anonimous little bunch of flowers.
World Book Day is an annual event to promote reading. It is celebrated on 23 April, the anniversary of the death of three great authors: Miguel de Cervantes, William Shakespeare and Inca Garcilaso de la Vega.