Holy Spirit Monday is a holiday that celebrates the time the Holy Spirit appeared to the Apostles and told them to go forth and teach Christianity to the world. The date usually depends on when Easter falls. It is not a holiday granted to everyone in Greece, but many people choose to take the day off to head to the beach. It is similar to Memorial Day in the United States in the way that people usually celebrate the holiday as a three-day weekend. Celebrations such as local fairs and festivals typically take place on Saturday.