Today is Sunday, September 22, 2019 Today in Saturday Night Live History 1999 - "Saturday Night Live 25: The Music: 1986-1989" aired. 2012 - Joseph Gordon-Levitt and Mumford & Sons were guests on "Saturday Night Live." Mumford & Sons performed "I Will Wait" and "Below My Feet." SNL Quotes Live from New York...it's Saturday night!