GOOD DAY (굿데이) was a South Korean girl group. They debuted in August 2017, under C9 Entertainment. Their
debut track is 'Rolly'. They disbanded by the end of 2019. Chaesol, Jeewon (Jiwon), Ye Ah (Haeun), Sunn (Viva), and Belle (Lucky) are now members of Cignature. Genie, Cherry, Nayoon, and Bomin are members of the upcoming girl group Red Square under About Entertainment.