Szent Iván-éj, or St. John's Night, is celebrated on the night of June 23rd, marking the summer solstice. This traditional festival is rooted in various cultural and religious practices, particularly in Hungary and other parts of Europe. It is associated with the celebration of light, fertility, and the arrival of summer. During Szent Iván-éj, people often light bonfires, which symbolize the sun's power and are believed to ward off evil spirits. Festivities may include singing, dancing, and various local customs, making it a vibrant occasion for communities to come together and celebrate the warmth of the season.