Vappu (known as Saint Walpurga's or May Day in the English-speaking world) is the biggest student event of the academic year in Finland. Vappu is celebrated in a carnival-style manner in both Joensuu and Kuopio, often for several weeks at a time.
Each campus, club and organisation has their own traditional events during Vappu which usually begin already in the middle of April. Also ISYY has its campus-specific Vappu traditions.
Make sure to join in the celebrations and check out the campus-specific events on ISYY's website!
Isyy.fi: Upcoming Events