What day is 1786-05-01 ?

Opera "The Marriage of Figaro" was premiered at Burg Theater in Vienna.

The French playwright Caron de Beaumarchais (1732 - 1799) was the subject of a satirical play written by the composer: Wolfgang Amadeus Mozart(1756 - 1791), Screenplay: Lorenzo da Ponte (1749 - 1838) of the opera "The Marriage of Figaro (Le Nozze di Figaro / Die Hochzeit des Figaro / Figaros Hochzeit / The Marriage of Figaro/K.492)" at the Vienna Burg Theater was premiered by Mozart self-directed and played the cembalo.

How many days before the anniversary?

May Day

May Day