Michael William Day is an American actor, comedian and writer. Day was hired as a writer for the NBC sketch comedy series Saturday Night Live before its 39th season in 2013. He was then promoted to on-air cast status and became a featured player during the show's 42nd season in 2016, later being promoted to repertory status beginning with the 44th season in 2018. He is also the host of the Netflix show Is It Cake? Day previously was an on-air correspondent for The Tonight Show with Jay Leno and The Jay Leno Show.

The forty-second season of the NBC sketch comedy series Saturday Night Live premiered on October 1, 2016, during the 2016–2017 television season, with host Margot Robbie and musical guest The Weeknd, and concluded on May 20, 2017, with host Dwayne Johnson and musical guest Katy Perry. The season removed two commercial breaks per episode in order to increase programming time. Episode 18 on April 15, 2017, was the first episode ever to be broadcast live in all four time zones within the contiguous United States. Until this episode, the show aired live only in the Eastern and Central time zones, and was tape-delayed in the Mountain and Pacific time zones.