Saint Valentine's Day, often simply Valentine's Day, is a holiday observed on February 14 honoring one or more early Christian martyrs named Valentinus. It was first established by Pope Gelasius I in 496 AD, and was later deleted from the General Roman Calendar of saints in 1969 by Pope Paul VI. It is celebrated in hundreds of countries around the world, mostly in the West, although it remains a working day in all of them.
The day first became associated with romantic love in the circle of Geoffrey Chaucer in the High Middle Ages, when the tradition of courtly love flourished. By the 15th century, it had evolved into an occasion in which lovers expressed their love for each other by presenting flowers, offering confectionery, and sending greeting cards known as "valentines".
Modern Valentine's Day symbols include the heart-shaped outline, doves, and the figure of the winged Cupid. Since the 19th century, handwritten valentines have given way to mass-produced greeting cards.