Saint Valentine's day is 14th February.
Saint Valentine's Day embraces a time of year that is historically associated with love and fertility. It encompasses the sacred marriage of Zeus and Hera in Ancient Athens and the Ancient Roman festival of Lupercus, the god of fertility.
The priests of Lupercus would perform a traditional purification ritual, slaughtering goats to the god, and after consuming wine, they would run through the streets of Rome holding aloft the skins of the goats touching anyone they met. The occasion compelled floods of young women to the streets in the belief that being touched would improve their chances of conceiving and bring forth easy childbirth. There remains some speculation over the exact date of the celebration.
It is believed that the young priest rose to distinction after betraying Emperor Claudius in 270 AD by conducting illegitimate wedding ceremonies in the capital. Emperor Claudius claimed that married men made poor soldiers and consequently decreed that all marriages of younger citizens would be outlawed. Bishop Valentine, however, maintained that marriage was part of God's plan and purpose for the world. He continued to conduct marriages in secret between young people, sometimes as young as twelve, in the name of love.
His success gained him unwelcome notoriety, which became Bishop Valentine's downfall. He was jailed and ultimately beheaded, but not before he fell in love with the jailer's daughter. It is thought that on the evening of his execution the bishop passed her a note which read "from your Valentine". This story has blossomed into the defining tradition of Valentine's Day. An estimated one billion cards sent each year, making it the second largest card-sending holiday of the year behind Christmas.
Valentine's Day has spawned celebrations of love beyond western culture. In Japan and Korea, Valentine's has become almost an obligation for women to give chocolates, known as giri-choco, to all of their co-workers. A reciprocal day on 14th of March known as White Day has emerged in recent times whereby men are supposed to thank those who remembered them on Valentine's Day with white chocolate or marshmallows, hence white day. In Korea there is an additional Black Day, held the following month on the 14th of April, for less fortunate men who did not receive gifts on Valentine's Day to gather together to eat Jajangmyun, Chinese style black noodles topped with a black sauce.