Día das Letras Galegas

The Day of Galician Letters (Día das Letras Galegas in Galician) is a celebration instituted in 1963 by the Royal Galician Academy to honor those people who stand out for their literary creation in the Galician language or for their defense of that language. Each year, it dedicates itself to a different personality, chosen by the Royal Galician Academy, taking into account that at least ten years have passed since their death. Since the establishment of this cultural celebration, only in 1998 was there a joint dedication to the medieval poets Martín Codax, Xohán de Cangas and Mendinho, famous for their cantigas.

The date of celebration of this event, May 17th, is due to the fact that on that day in 1863, the first edition of Rosalía de Castro's work Cantares Gallegos was published in Havana, which would mark the beginning of the Rexurdimento or cultural rebirth of Galician.

It is a holiday in the Autonomous Community of Galicia (Spain).http://www.diadasletrasgalegas.com/homenaxeado/lois-pereiro_2011

source:wikipedia...and speaking of literature...here we go...