St. Stephen's Day, also known as the Feast of St. Stephen, is a public holiday in Slovakia that commemorates the life of Stephen I, the first king of Hungary. As a historical figure who played a significant role in Slovakia's history, he is celebrated with a sense of grandeur and significance. The holiday takes place on August 20 each year and marks the end of the summer holidays while also signaling the commencement of the new school year in Slovakia.

As it is a public holiday in Slovakia, government offices, schools, and most businesses are closed. The day is often earmarked with special religious services such as Holy Mass in honor of St. Stephen and his canonization. Many people attend these services, paying homage to the king who Christianized the Magyars and firmly established Christianity in the region. The day is characterized by peace and tranquility, with families gathering together to celebrate.

In addition to the religious aspects, St. Stephen's Day in Slovakia is also marked with a series of cultural and social events. Various towns and cities across the country organize festivities such as concerts, cultural performances, food festivals, and parades. Fireworks and other displays are also common, particularly in major cities. The holiday provides an opportunity for Slovaks to embrace their rich heritage and history while paying respect to a significant figure in their past.