<Li> December 1, 2013: 1 Night 2 Days Season 3's first episode (Kim Joo - hyuk, Kim Joon - ho, Defconn, and Jung Joon - young's first episode) </Li> <Li> December 6, 2015: Kim Joo - hyuk's last episode </Li> <Li> May 1, 2016: Yoon Shi - yoon joins the cast </Li> <Li> October 9, 2016: Jung Joon - young temporarily leaves the show </Li>

When did yoon si yoon join 2 days 1 night