Vappu happens every year on 30th April and 1st May.This day has usually been the day of workers but in Finland students have taken this day over. Some subject organizations start celebrating up to a week before Vappu and keep on going throughout the week. Everyone wears their overalls (and Finnish graduation hats) and on 1st May the students gather in Kaivopuisto for a huge picnic. On the evening before (30.4) there are big student parties all over the city. You can’t miss Vappu if you’re in Finland then.