when is a midsummer's night eve?
Midsummer in Sweden: Origins and Traditions. Given Scandinaviaâs long, dark winters, itâs not surprising that the arrival of summer is a big deal throughout the Nordic countries. In Sweden, Midsummerâs Eve is one of the most important days of the year, rivaling Christmas with its festive spirit and traditions. Traditionally, Midsummer was celebrated on June 24, the feast day of St. John the Baptist, but the holiday has its roots in a pre-Christian solstice festival.