Вальбурга
A later May festival celebrated in Germanic countries, Walpurgis Night, commemorates the official canonization of Saint Walpurga on 1 May 870. In Gaelic culture, the evening of April 30th was the celebration of Beltane (which translates to "lucky fire"), the start of the summer season. First attested in 900 AD, the celebration mainly focused on the symbolic use of fire to bless cattle and other livestock as they were moved to summer pastures. This custom continued into the early 19th century, during which time cattle would be made to jump over fires to protect their milk from being stolen by fairies. People would also leap over the fires for luck.