One Day spawned two boy bands, 2AM and 2PM, the latter of which Taecyeon became a member of.
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Taecyeon was educated at Gel In High School in Seoul and studied Business Administration at Dankook University.
Yoona was a guest on SBS TV Family Outing which ended February 14, 2010, and a permanent cast member on Family Outing Season 2 with Yoon Sang-hyun, Kim Won-hee, Ji Sang-ryeol, Shin Bong-seon, Jang Dong-Min, Super Junior's Kim Heechul, 2AM's Jo Kwon and 2PM's Ok Taecyeon.