"ラ・ディア・デ・サン・セバスティアン" (La Dia de San Sebastián) is a vibrant festival celebrated in San Sebastián, Spain. It takes place on January 20th each year, honoring the city's patron saint, Saint Sebastian. The festival features lively parades, traditional music, and delicious local cuisine, attracting both locals and tourists. During the celebration, participants often dress in traditional attire and enjoy a variety of activities, including street performances and communal feasts. The event highlights the rich cultural heritage of Basque Country and fosters a sense of community among residents, making it a significant occasion in the city's calendar.