2019. 11. 26
2019 아시아 아티스트 어워즈 인 베트남 / 포커스상 가수 부문, 스타15 인기상
2019 Asia Artist Award in Vietnam / Focus-Singer Award, Star15 Popularity Award

2019. 08. 22
2019 소리바다 베스트 케이뮤직 어워드 / 퍼포먼스 부문
2019 Soribada Best K-Music Awards / Performance Award

2019. 07. 18
2019 MTN 방송광고 페스티벌 / CF스타 신인상
2019 MTN Ad Festival Awards / CF Star Rookies

2019. 02. 19
이달의 소녀 리팩키지 앨범 [X X] 발매
LOOΠΔ's repackage album [X X] was released

2019. 02. 16 - 2018. 02. 17
이달의 소녀 콘서트 [LOOΠΔVERSE] 개최 (서울)
LOOΠΔ's concert [LOOΠΔVERSE] was held (Seoul)

2018. 12. 19
2019 대한민국 퍼스트브랜드 대상 / 여자 신인 아이돌 부문

2018. 11. 23 - 2018. 11. 25
보이는 라디오 콘서트 [LOOΠΔ Studio in Seoul] 개최 (서울)
LOOΠΔ's visual radio concert [LOOΠΔ Studio in Seoul] was held (Seoul)

2018. 11. 04
MTV Europe Music Awards / Best Korean Act

2018. 08. 20
이달의 소녀 미니 앨범 [+ +] 발매
LOOΠΔ's first mini album [+ +] was released

2018. 08. 19
데뷔 콘서트 [LOOΠΔbirth] 개최 (서울)
LOOΠΔ's debut concert [LOOΠΔbirth] was held (Seoul)

2018. 08. 07
이달의 소녀 리드 싱글 'favOriTe' 발매
LOOΠΔ's lead single 'favOriTe' was released

2018. 07. 07
뮤직비디오 상영회 [이달의 소녀 Cinema Theory 'Up&Line' in Busan] 개최 (부산)
The music video screening event [LOOΠΔ Cinema Theory 'Up&Line' in Busan] was held (Busan)

2018. 06. 02 - 2018. 06. 03
팬미팅 [이달의 소녀 PREMIER GREETING : Line&Up] 개최 (서울)
The fan meeting [LOOΠΔ PREMIER GREETING : Line&Up] was held (Seoul)

2018. 05. 30
이달의 소녀 yyxy 미니 앨범 [beauty&thebeat] 발매
LOOΠΔ/yyxy's first mini album [beauty&thebeat] was released

2018. 03. 30
Olivia Hye 싱글 앨범 [Olivia Hye], [Go Won&Olivia Hye] 발매
The twelfth single [Olivia Hye] was released

2018. 03. 17
뮤직비디오 상영회 [이달의 소녀 Cinema Theory 'Up&Line'] 개최 (서울)
The music video screening event [LOOΠΔ Cinema Theory 'Up&Line'] was held (Seoul)

2018. 03. 17
열 두번째 멤버 "Olivia Hye" 공개
The twelfth member Olivia Hye was revealed

2018. 02. 03
뮤직비디오 상영회 [이달의 소녀 X 심화학습반] 개최 (서울)
The music video screening event [LOOΠΔ X Study Group] was held (Seoul) 1st LOOΠΔ X Study Group

2018. 01. 30
고원 싱글 앨범 [Go Won], [Chuu&Go Won] 발매
The eleventh single [Go Won], [Chuu&Go Won] was released

2018. 01. 15
열한 번째 멤버 "고원" 공개
The eleventh member Go Won was revealed

2017. 12. 28
츄 싱글 앨범 [Chuu], [Yves&Chuu] 발매
The tenth single [Chuu], [Yves&Chuu] was released

2017. 12. 14
열 번째 멤버 "츄" 공개
The tenth member Chuu was revealed

2017. 11. 28
이브 싱글 앨범 [Yves] 발매
The ninth single [Yves] was released

2017. 11. 14
아홉 번째 멤버 "이브" 공개
The ninth member Yves was revealed

2017. 10. 31
이달의 소녀 오드아이써클 리팩키지 앨범 [Max&Match] 발매
LOOΠΔ / ODD EYE CIRCLE's repackage album [Max&Match] was released

2017. 09. 21
이달의 소녀 오드아이써클 미니 앨범 [Mix&Match] 발매
LOOΠΔ / ODD EYE CIRCLE's first mini album [Mix&Match] was released

2017. 07. 28
최리 싱글 앨범 [Choerry], [JinSoul&Choerry] 발매
The eighth single [Choerry], [JinSoul&Choerry] were released

2017. 07. 12
여덟 번째 멤버 "최리" 공개
The eighth member Choerry was revealed

2017. 06. 26
진솔 싱글 앨범 [JinSoul], [Kim Lip&JinSoul] 발매
The seventh single [JinSoul], [Kim Lip&JinSoul] were released

2017. 06. 13
일곱 번째 멤버 "진솔" 공개
The seventh member JinSoul was revealed

2017. 05. 26
김립 싱글 앨범 [Kim Lip] 오프라인 발매
The sixth single [Kim Lip] was released physically

2017. 05. 23
김립 싱글 앨범 [Kim Lip] 온라인 발매
The sixth single [Kim Lip] was released digitally

2017. 05. 15
여섯 번째 멤버 "김립" 공개
The sixth member Kim Lip was revealed

2017. 04. 27
이달의 소녀 1/3 리팩키지 앨범 [Love&Evil] 발매
LOOΠΔ 1/3's repackage mini album [Love&Evil] was released

2017. 04. 17
ViVi 싱글 앨범 [ViVi], [HaSeul&ViVi] 발매
The fifith single [ViVi], [HaSeul&ViVi] was released

2017. 03. 13
이달의 소녀 1/3 미니 앨범 [Love&Live] 발매
LOOΠΔ 1/3's first mini album [Love&Live] was released

2017. 02. 13
다섯 번째 멤버 "ViVi" 공개
The fifth member ViVi was revealed

2017. 1. 16
여진 싱글 앨범 [YeoJin], [HaSeul&YeoJin], [LOOΠΔ&YeoJin] 발매
The fourth single albums [YeoJin], [HaSeul&YeoJin], and [LOOΠΔ&YeoJin] were released

2017. 01. 04
네 번째 멤버 "여진" 공개
The fourth member YeoJin was revealed

2016. 12. 15
하슬 싱글 [HaSeul], [LOOΠΔ&HaSeul] 발매
The third single albums [HaSeul] and [LOOΠΔ&HaSeul] were released

2016. 12. 08
세 번째 멤버 "하슬" 공개
The third member HaSeul was revealed

2016. 11. 17
현진 싱글 앨범 [HyunJin], [HeeJin&HyunJin] 발매
The second single albums [HyunJin] and [HeeJin&HyunJin] were released

2016. 10. 28
두 번째 멤버 "현진" 공개
The second member HyunJin was revealed

2016. 10. 05
희진 싱글 앨범 [HeeJin] 발매
The first single album [HeeJin] was released

2016. 09. 26
이달의 소녀(LOOΠΔ) 첫 멤버 "희진" 공개
The first member HeeJin was revealed