Walpurgis Night (or St Walpurga’s Night, originally) is associated more with witches than the female saint. In Czechoslovakia they burn little witches made of rags; in Estonia they dress as witches like we would on Hallowe’en; in Finland there are carnivals and picnics; northern Germany has bonfires.
In old Ireland it was called Beltane; the day cattle were driven to the pastures for the summer, and rituals were done to protect them such as passing them through two bonfires. The flames would be used to relight all domestic fires and candles, and the ashes from the original fires would be spread on crops.
Other events today: