English abbess who preached Christianity in Germany. Walpurgis Night, the eve of 1 May (one of her feast days), became associated with witches' sabbaths and other superstitions. Her feast day is 25 February.
White, blue, and red became known as the pan-Slavic colours, influencing many other Eastern European flags. White, blue, and red are also the colours of the arms of the Duchy of Moscow. Effective date: 11 December 1993.