Saint John's Day, also known as the Feast of Saint John the Baptist, is celebrated on June 24 each year. This day honors the birth of Saint John the Baptist, a significant figure in Christianity known for baptizing Jesus. The celebration often includes various cultural traditions, such as bonfires and festivals, particularly in regions like Spain and Portugal. In many countries, Saint John's Day marks the beginning of summer and is associated with various customs, including singing, dancing, and feasting. The day is also linked to ancient solstice celebrations, reflecting the transition from spring to summer in the Northern Hemisphere.