The Best Day2 is the second compilation album by South Korean band Day6, released on December 4, 2019, through Warner Music Japan. It compiles Korean tracks released between 2018 and 2019, the new Japanese songs "Finale" and "If You" as well as the Japanese versions of "Time of Our Life" and "Sweet Chaos".
The single "Finale" was released digitally on October 23, 2019, as a promotional track.