Wikipedia
Sânziană is the Romanian name for gentle fairies who play an important part in local folklore, also used to designate the Galium verum or Cruciata laevipes flowers. Under the plural form Sânziene, the word designates an annual festival in the fairies' honor. Etymologically, the name comes from the Latin Sancta Diana, the Roman goddess of the hunt and moon, also celebrated in Roman Dacia (ancient Romania). Diana was known to be the virgin goddess and looked after virgins and women. She was one of the three maiden goddesses, Diana, Minerva and Vesta, who swore never to marry.
People in the western Carpathian Mountains celebrate the Sânziene holiday annually, on June 24. This is similar to the Swedish Midsummer holiday, and is believed to be a pagan celebration of the summer solstice in June. According to the official position of the Romanian Orthodox Church, the customs actually relate to the celebration of Saint John the Baptist's Nativity, which also happens on June 24.