Lady Day is the traditional name of the Feast of the Annunciation of the Blessed Virgin. Lady Day may also refer to: Billie Holiday (1915–1959), American jazz singer Lady Day: The Complete Billie Holiday on Columbia 1933–1944 Lady Day (Amii Stewart album), 2004 "Lady Day", a song by Lou Reed from the album Berlin (1973) "Lady Day", a song by Lifehouse from the album Almería "Lady Day", a song by Rod Stewart on Gasoline Alley (album) (1970)