Day6 (Korean: 데이식스; RR: De-i-sik-seu; stylized in all caps) is a South Korean pop rock band under the label JYP Entertainment. The group debuted on September 7, 2015, with the EP The Day, which peaked at No.2 on Billboard's World Album Chart a week following its release. The band consists of four members: Sungjin, Young K, Wonpil and Dowoon. Originally a six-piece band, Junhyeok departed in February 2016 and Jae departed on December 31, 2021.