St. John's Day is celebrated as a Christian feast day on June 24th. It is related to Midsummer celebrations, but it is also strongly connected with the prechristian paganism. Saint John the Baptist was a forerunner to Jesus (and according to the Gospel of Luke, was actually related to him); he had his own disciples and in fact, still has a small sect of followers in Mandæism, mostly located in Iran and Iraq. Source: (scandinaviastandard.com) Also: The celebration predates Christianity, and has existed under different names and traditions around the world.[7][8] The undivided Christian Church designated June 24 as the feast day of the early Christian martyr St John the Baptist, and the observance of St John's Day begins the evening before, known as Saint John's Eve. Source: (en.wikipedia.org)