May Eve, the eve of the first day of summer in the Northern hemisphere (see May 1): Walpurgis Night (Central and Northern Europe)

Walpurgis Night

Germanic festival celebrating the start of summer

Walpurgis Night, an abbreviation of Saint Walpurgis Night, also known as Saint Walpurga's Eve and Walpurgisnacht, is the eve of the Christian feast day of Saint Walpurga, an 8th-century abbess in Francia, and is celebrated on the night of 30 April and the day of 1 May. This…