May Day (May 1) in France. This national holiday, known as the "Fête du Travail" (worker's holiday), is commemorated by "the buying for oneself or one's loved ones or friends a pot or bouquet of lily of the valley (muguet des bois)."
A history of the holiday celebrated on the first Monday in September and 'dedicated to the social and economic achievements of American workers.' (Copyright 2006 by Librarians' Internet Index)
