The Biray Festival, also known as Pistang Biray, is observed in the municipality of Belison in the Philippines every June 1. This special non-working holiday honors the Blessed Virgin Mary and marks the conclusion of the annual Flores de Mayo celebration, which takes place throughout May. The festival originated as part of the Flores de Mayo festivities, which include decorating churches with flowers and reciting the Dominican Rosary. A key feature of the Biray Festival is the fluvial parade, where devotees in decorated boats carry an image of the Virgin Mary along the river, accompanied by singing and prayers. Following the parade, various activities such as boat racing, sports competitions, and dancing occur at the local beach, blending both religious and secular elements in the celebration.