2017

2017 is the year ℃-ute disbanded; Tsugunaga Momoko graduated from Country Girls and Hello! Project; Country Girls became a semi-active group, with some of its members joining other Hello! Project groups for their main activities as concurrent members; Fujii Rio, Ogawa Rena, and Taguchi Natsumi left Kobushi Factory and Hello! Project; Inaba Manaka returned to activities within Hello! Project; Kudo Haruka graduated from Morning Musume '17 and Hello! Project; and Aikawa Maho graduated from ANGERME and Hello! Project.
==Members==
*January 1:
**Morning Musume '16 becomes Morning Musume '17.
**Wada Ayaka becomes leader of Hello! Project.
**Fukumura Mizuki becomes sub-leader of Hello! Project.
*March 6: Shimakura Rika, Hibi Marina, Eguchi Saya, Doi Rena, Okamura Minami, Matsunaga Riai, Yamada Ichigo, and Nakayama Natsume join Hello Pro Kenshuusei.
*March 15: Kamiishinaka Kana is formed.
*May 22: Buono! disbands.
*June 12: ℃-ute disbands.
*June 26:
**Dambara Ruru and Yanagawa Nanami join Juice=Juice.
**Morito Chisaki joins Morning Musume '17.
**Funaki Musubu and Kawamura Ayano join ANGERME.
**Ichioka Reina becomes the leader of a new group.
**Takase Kurumi and Kiyono Momohime become members of a new theater section.
*June 30: Tsugunaga Momoko graduates from Country Girls and Hello! Project.
*July 6: Fujii Rio leaves Kobushi Factory and Hello! Project.
*September 6: Ogawa Rena graduates from Kobushi Factory and Hello! Project.
*September 8: Inaba Manaka returns from hiatus and begins solo activities.
*November 1: Morning Musume 20th is formed.
*December 6: Taguchi Natsumi leaves Kobushi Factory and Hello! Project.
*December 10: Hashimoto Momoko, Goto Sayaka, Tamenaga Shion, Shutto Anna, Kubota Nanami, Kanemitsu Ruru and Matsubara Yuriya join Hello Pro Kenshuusei.
*December 11: Kudo Haruka graduates from Morning Musume '17 and Hello! Project.
*December 31: Aikawa Maho graduates from ANGERME and Hello! Project.
==Singles==
*February 4: Real☆Little☆Girl / Kanojo ni Naritai!!! (Hello Pro Kenshuusei Hokkaido Ver.) - Hello Pro Kenshuusei Hokkaido (pre-sale; limited release)
*February 8: Good Boy Bad Girl / Peanut Butter Jelly Love - Country Girls
*February 22: Hatsukoi Sunrise / Just Try! / Uruwashi no Camellia - Tsubaki Factory
*March 8: BRAND NEW MORNING / Jealousy Jealousy - Morning Musume '17
*March 25: Furusato no Yume - Kamiishinaka Kana (pre-sale; limited release)
*March 29: To Tomorrow / Final Squall / The Curtain Rises - ℃-ute
*April 26: Jidanda Dance / Feel! Kanjiru yo - Juice=Juice
*June 14: Shalala! Yareru Hazu sa / Ee ja nai ka Ninja nai ka - Kobushi Factory
*June 21: Ai Sae Areba Nanni mo Iranai / Namida Iro no Ketsui / Majokko Megu-chan- ANGERME
*July 5: Real☆Little☆Girl / Kanojo ni Naritai!!! (Hello Pro Kenshuusei Hokkaido Ver.) - Hello Pro Kenshuusei Hokkaido (general release)
*July 26: Shuukatsu Sensation / Waratte / Hana Moyou - Tsubaki Factory
*August 23: Fiesta! Fiesta! - Juice=Juice (digital release)
*October 4: Jama Shinai de Here We Go! / Dokyuu no Go Sign / Wakain da shi! - Morning Musume '17
*November 3: Ai no Tane (20th Anniversary Ver.) - Morning Musume 20th (digital release)
*November 30: Gosenfu no Tasuki - Morning Musume '17 (digital release)
*December 24: Kaite wa Keshite no "I Love You" - Country Girls (digital release)
==Digital Songs==
*May 19:
**Goal ~Ashita wa Acchi da yo~ - Juice=Juice
**Miss Henkan!! - Kudo Haruka, Sato Masaki (Morning Musume '17) 
*June 2: 
**Hello! Massara no Jibun - Hello Pro Kenshuusei
**Idol Sotsugyou Chuuijikou (2017.5.4 Live @ Nakano Sun Plaza) - Country Girls
*June 16: Jouro - Juice=Juice
*June 17: ♡Otomomochi Densetsu♡ - Momochi-sensei with Otomomochi no Minna
*June 30:
**Isshakudama de Buppanase! - Hello Pro Kenshuusei
**Inoue no Uta - Inoue Rei (Kobushi Factory), Inoue Hikaru (Hello Pro Kenshuusei)
*July 14: Obaka Neko to Obaka Neko Baka no Uta - Iikubo Haruna (Morning Musume '17), Kanazawa Tomoko (Juice=Juice)
*July 28: Minmin Rock 'n' Roll! - Funaki Musubu (ANGERME / Country Girls), Yokoyama Reina (Morning Musume '17)
*August 11:
**Konamaiki Girl - Country Girls 
**Gobaku ~We Can't Go Back~ - Ichioka Reina, Dambara Ruru, Kawamura Ayano, Takase Kurumi, Kiyono Momohime
*September 8: Arigatameiwaku Monogatari - Hello Pro Kenshuusei
*December 22: Zouni de Kenkashiten ja Nee yo - Miyazaki Yuka (Juice=Juice), Makino Maria (Morning Musume '17), Kawamura Ayano (ANGERME)
==Albums==
*March 29: Butai "JK Ninja Girls" Original Soundtrack - Kobushi Factory
*May 3: ℃OMPLETE SINGLE COLLECTION - ℃-ute
*June 28: Tsugunaga Momoko Idol 15 Shuunen Kinen Album ♡Arigatou Otomomochi♡ - Tsugunaga Momoko
*July 12: Engeki Joshibu "Pharaoh no Haka" Original Soundtrack - Morning Musume '17
*September 6: Eiga & Butai "JK Ninja Girls" Original Soundtrack - Kobushi Factory
*November 1: Engeki Joshibu "Yumemiru Television" Original Soundtrack - ANGERME
*December 6: ⑮ Thank you, too - Morning Musume '17
*December 13: Petit Best 18 - Hello! Project
==DVD/Blu-ray Singles==
*January 9: Event V "Sexy Cat no Enzetsu / Mukidashi de Mukiatte / Sou ja nai" - Morning Musume '16 (DVD)
*March 12: Event V "Good Boy Bad Girl / Peanut Butter Jelly Love" - Country Girls (DVD)
*April 1: Event V "Hatsukoi Sunrise / Just Try! / Uruwashi no Camellia" - Tsubaki Factory (DVD)
*May 6: Event V "BRAND NEW MORNING / Jealousy Jealousy" - Morning Musume '17 (DVD)
*May 7:
**Event V "To Tomorrow / Final Squall / The Curtain Rises" - ℃-ute (DVD)
**Making V "To Tomorrow / Final Squall / The Curtain Rises" - ℃-ute (DVD)
*May 20: Event V "Jidanda Dance / Feel! Kanjiru yo" - Juice=Juice (DVD)
*August 8: Event V "Shalala! Yareru Hazu sa / Ee ja nai ka Ninja nai ka" - Kobushi Factory (DVD)
*September 3: Event V "Ai Sae Areba Nanni mo Iranai / Namida Iro no Ketsui / Majokko Megu-chan" - ANGERME (DVD)
*September 16: Event V "Shuukatsu Sensation / Waratte / Hana Moyou" - Tsubaki Factory (DVD)
*November 12: Event V "Jama Shinai de Here We Go! / Dokyuu no Go Sign / Wakain da shi!" - Morning Musume '17 (DVD)
*December 13: Manner Mode / Kisokutadashiku Utsukushiku / Kimi Dake ja nai sa...friends - ANGERME (DVD & Blu-ray)
==DVDs/Blu-rays==
*January 18:
**℃-ute Cutie Circuit ~Let's go to Hong Kong & Taipei!~ (DVD)
**The Girls Live Vol.29 (DVD)
*January 25: MODE (DVD)
*February 22:
**Juice=Juice LIVE MISSION FINAL at Nippon Budokan (DVD & Blu-ray)
**Hello! Project Mobile Presents Yajima Maimi & Suzuki Airi Acoustic Live 2016 ~Colon no Musume Futatabi~ (Blu-ray)
*March 8: The Girls Live Vol.30 (DVD)
*March 22: ℃-ute Concert Tour 2016 Aki ~℃OMPASS~ (DVD & Blu-ray)
*March 29: Morning Musume '16 Concert Tour Aki ~MY VISION~ (DVD & Blu-ray)
*April 12: Hello! Project COUNTDOWN PARTY 2016 ~GOOD BYE & HELLO!~ (DVD & Blu-ray)
*April 26: Hello! Project 2017 WINTER ~Crystal Clear・Kaleidoscope~ (DVD & Blu-ray)
*May 17:
**The Girls Live Vol.31 (DVD)
**Morning Musume '16 Live Concert in Taipei (DVD)
**Nega Poji Poji (DVD)
*May 24: Country Girls Music Video Clips Vol.1 (Blu-ray)
*June 14: The Girls Live Vol.32 (DVD)
*June 21: Off Momochi in Okinawa - Tsugunaga Momoko (Blu-ray)
*June 28: Chisaki in Paradise - Morito Chisaki (Blu-ray)
*July 12:
**Hello! Project Hina Fest 2017 <℃-ute Premium> (DVD & Blu-ray)
**Hello! Project Hina Fest 2017 <Morning Musume '17 Premium> (DVD & Blu-ray)
**The Girls Live Vol.33 (DVD)
*August 9: Juice=Juice LIVE AROUND 2017 ~NEXT ONE SPECIAL~ (DVD & Blu-ray)
*August 16:
**Country Girls Concert Tour 2017 Haru ~Momochi-ism~ (DVD & Blu-ray)
**The Girls Live Vol.34 (DVD)
*August 23: ANGERME Concert Tour 2017 Haru ~Kawaru Mono Kawaranai Mono~ (DVD & Blu-ray)
*September 6:
**℃-ute Cutie Circuit ~¡De vuelta a México!~ (DVD)
**℃-ute Cutie Circuit ~De retour à Paris~ (DVD)
*September 13:
**Tsugunaga Momoko Memorial Event Momogatari (DVD)
**Buono! Live 2017 ~Pienezza!~ (DVD & Blu-ray)
**The Girls Live Vol.35 (DVD)
*September 20: Morning Musume '17 Concert Tour Haru ~THE INSPIRATION!~ (DVD & Blu-ray)
*September 27: raindrop - Funaki Musubu (Blu-ray)
*October 4: Pharaoh no Haka (DVD)
*October 11:
**℃-ute Last Album "℃OMPLETE SINGLE COLLECTION" Hatsubai Kinen Special Event (DVD)
**℃-ute Last Concert in Saitama Super Arena ~Thank you team℃-ute~ (DVD & Blu-ray)
**The Girls Live Vol.36 (DVD)
*October 25: Tsugunaga Momoko Last Live ♥Arigatou Otomomochi♥ (DVD & Blu-ray)
*November 15:
**Morning Musume '17 Live Concert in Hong Kong (DVD)
**Hello! Project 2017 SUMMER ~HELLO! MEETING・HELLO! GATHERING~ (DVD & Blu-ray)
**The Girls Live Vol.37 (DVD)
*November 22: Do The Vacation - Kudo Haruka (Blu-ray)
*December 13: The Girls Live Vol.38 (DVD)
*December 20: OTODAMA SEA STUDIO 2017 Natsu da! Umi da! ANGERME da!! (DVD)
*December 27: Sakura in Guam - Oda Sakura (Blu-ray)
==Concerts==
*January 2 - February 25: Hello! Project 2017 WINTER
*January 5 - January 9: ℃-ute Shinshun Concert 2017 ~℃OMPASS~
*January 22 - June 3: Naruchika 2017 ℃-ute
*February 2 - April 9: Juice=Juice LIVE AROUND 2017 ~NEXT ONE~
*February 5: Hello Pro Kenshuusei Hokkaido Teiki Kouen Vol.1
*February 5 - February 19: ℃-ute Dinner Show 2017 ~℃ocktail~
*February 8 - March 8: ℃-ute Special Live 2017 ~℃ocktail in ℃OTTON CLUB~
*March 5 - April 1: ANGERME Live Tour 2017 Haru ~Rin~
*March 11 - March 20: Hello! Project Kenshuusei Happyoukai 2017 3gatsu ~Marching!~
*March 18 - August 13: Morning Musume '17 Concert Tour Haru ~THE INSPIRATION!~
*March 22 - April 13: HAPPY DINNER TIME ~Momo ni Sachi Are!~
*March 25 - March 26: Hello! Project Hina Fest 2017
*April 1 - June 4: ℃-ute Concert Tour 2017 Haru ~℃elebration~
*April 9 - May 15: ANGERME Concert Tour 2017 Haru ~Kawaru Mono Kawaranai Mono~
*April 9 - May 20: Country Girls Concert Tour 2017 Haru ~Momochi-ism~
*April 9 - May 28: Kobushi Factory Live Tour 2017 Haru ~PROGRESSIVE~
*April 13: ℃-ute Cutie Circuit ~¡De vuelta a México!~
*April 16: ℃-ute Cutie Circuit ~De retour à Paris~
*April 29 - June 18: Country Girls Live Tour 2017 Haru
*April 29 - May 27: Juice=Juice LIVE AROUND 2017 ~NEXT ONE SPECIAL~
*May 4: Hello Pro Kenshuusei Hokkaido Teiki Kouen Vol.2
*May 5: Hello! Project Kenshuusei Happyoukai 2017 ~Haru no Koukai Jitsuryoku Shindan Test~
*May 22: Buono! Live 2017 ~Pienezza!~
*June 3 - June 10: Hello! Project Kenshuusei Happyoukai 2017 6gatsu ~June Tripper!~
*June 11: ℃-ute Dinner Show 2017 ~Iwai! ℃-ute Kessei 12 Shuunen!!!!!~
*June 12: ℃-ute Last Concert in Saitama Super Arena ~Thank you team℃-ute~
*June 25: Morning Musume '17 Live Concert in Hong Kong
*June 30: Tsugunaga Momoko Last Live ♥Arigatou Otomomochi♥
*July 13 - September 11: Juice=Juice LIVE AROUND 2017 ~Seven Horizon~
*July 15 - September 2: Hello! Project 2017 SUMMER
*July 17: Hello Pro Kenshuusei Hokkaido Teiki Kouen Vol.3
*August 2: OTODAMA SEA STUDIO 2017 Natsu da! Umi da! ANGERME da!!
*August 15 - August 17: Naruchika Morning Musume '17
*August 22: OTODAMA SEA STUDIO 2017 ~SUMMER FACTORY~
*September 3 - September 10: Hello! Project Kenshuusei Happyoukai 2017 9gatsu ~Go NEXT!~
*September 8 - December 17: Juice=Juice LIVE AROUND 2017 ~World Tour~
*September 10 - December 10: ANGERME Live Tour 2017 Aki "Black & White"
*September 12: NTT docomo presents ANGERME VS Up Up Girls (Kakko Kari) ~THANK YOU! DEAR MY FRIENDS~
*September 18: Hello Pro Kenshuusei Hokkaido Teiki Kouen Vol.4
*September 23 - December 3: Morning Musume Tanjou 20 Shuunen Kinen Concert Tour 2017 Aki ~We are MORNING MUSUME~
*October 6 - October 10: Juice=Juice LIVE AROUND 2017 ~World Tour→J=J Day Special~
*October 7 - December 3: Kobushi Factory Live Tour 2017 Aki ~Songs For You~
*October 22 - November 12: Juice=Juice LIVE AROUND 2017 ~Beyond the Beyond~
*November 11: ANGERME Concert 2017 Autumn "Black & White" special ~Fuurinkazan~
*November 20: Juice=Juice LIVE AROUND 2017 FINAL at Nippon Budokan ~Seven Squeeze!~
*November 23: Hello Pro Kenshuusei Hokkaido Teiki Kouen Vol.5
*December 2 - December 10: Hello! Project Kenshuusei Happyoukai 2017 12gatsu
*December 11: Morning Musume Tanjou 20 Shuunen Kinen Concert Tour 2017 Aki ~We are MORNING MUSUME~ Kudo Haruka Sotsugyou Special
*December 31: Hello! Project 20th Anniversary!! Hello! Project COUNTDOWN PARTY 2017 ~GOOD BYE & HELLO!~
==Events==
*January 26 - January 27: Morning Days Happy Holiday Fukumura Mizuki・Ishida Ayumi Fanclub Tour in Yamanashi
*January 29 - February 5: Tsubaki Factory Ouen Kikaku ~Camellia Fights! vol.5~
*February 21: Morning Musume '17 13ki Member FC Event
*March 11 - March 12: Juice=Juice Fanclub Tour ~Miracle×Juice×Bus 2~ in Izu
*March 25 - March 26: Asobu. Kurasu. Sodateru. SATOYAMA & SATOUMI e Ikou 2017
*April 18 - April 20: Tsugunaga Momoko Memorial Event Momogatari
*May 18: ℃-ute Okai Chisato・Hagiwara Mai FC Event 2017
*May 28 - May 30: Cutie Kankousha Fanclub Tour in Okinawa ~FINAL "Cutie" VA℃ATION~
*June 2 - June 4: Momochi to Iku Otomomochi Tour ~Minna Zutto Otomomochi da yo~
*September 1: Kobushi Factory FC Event 2017
*September 14: Morning Musume Kessei 20 Shuunen Kinen Event ~21 Nenme mo Ganbatte Ikimasshoi!~
*October 9: Asobu. Fureau. Taiken Suru. SATOYAMA & SATOUMI Aki Camp in Odawara
*November 6: Country Girls 3 Shuunen Kinen Event ~Minna Genki Shiteta?~
*November 8 - November 9: Morning Days Happy Holiday 10ki Member Iikubo Haruna・Ishida Ayumi・Sato Masaki・Kudo Haruka Fanclub Tour in Yamanashi
*December 5: Yamaki Risa to Tanoshimu! Real Dasshutsu Game
*December 9: Morning Musume '17 Kudo Haruka Solo Event
*December 9 - December 10: SATOYAMA Tour Dai 5 Dan! Kobushi Factory to Sugosu 1paku 2nichi Bus Tour in Gunma
*December 16: Kobushi Factory Christmas FC Event 2017 ~Smile For You~
*December 17: ANGERME Christmas FC Event 2017 ~Red & White~
*December 23: Tsubaki Factory FC Event ~Camellia Fights! vol.6 Mini Mini☆Christmas-kai 3~
*December 24: Morning Musume '17 Christmas FC Event ~Premoni 2~
===Birthday Events===
*January 12: Country Girls Yanagawa Nanami Birthday Event 2017
*January 13: Morning Musume '17 Ishida Ayumi Birthday Event
*February 2: Morning Musume '17 Makino Maria Birthday Event
*February 6: ℃-ute Nakajima Saki Birthday Event 2017
*February 7: ℃-ute Yajima Maimi & Hagiwara Mai Birthday Event 2017
*February 10: Kobushi Factory Nomura Minami Birthday Event 2017
*February 13: Country Girls Ozeki Mai Birthday Event 2017
*February 15: Morning Musume '17 Ogata Haruna Birthday Event
*February 20: Country Girls Morito Chisaki Birthday Event 2017
*March 6: Momochi no Otanjoubi Kai 2017
*March 7: Kobushi Factory Fujii Rio Birthday Event 2017
*March 9: Kobushi Factory Wada Sakurako Birthday Event 2017
*March 27: Kobushi Factory Ogawa Rena Birthday Event 2017
*March 28: Morning Musume '17 Haga Akane Birthday Event
*March 29: Morning Musume '17 Oda Sakura Birthday Event ~Sakura no Shirabe 6~
*April 2: Juice=Juice Miyazaki Yuka Birthday Event 2017
*April 3: Tsubaki Factory Kishimoto Yumeno Birthday Event 2017
*April 6: ANGERME Katsuta Rina Birthday Event 2017
*April 21: Juice=Juice Takagi Sayuki Birthday Event 2017
*April 24: ℃-ute Suzuki Airi Birthday Event 2017
*April 27: Kobushi Factory Hamaura Ayano Birthday Event 2017
*May 8: Morning Musume '17 Sato Masaki Birthday Event
*May 23: Country Girls Funaki Musubu Birthday Event 2017
*May 29: ANGERME Sasaki Rikako Birthday Event 2017
*June 5: ANGERME Nakanishi Kana Birthday Event 2017
*June 13: ANGERME Murota Mizuki Birthday Event 2017
*July 2: Juice=Juice Kanazawa Tomoko Birthday Event 2017
*July 21: Morning Musume '17 Ikuta Erina Birthday Event
*July 31: Tsubaki Factory Akiyama Mao Birthday Event 2017
*August 1: ANGERME Wada Ayaka Birthday Event 2017
*August 7: Kobushi Factory Inoue Rei Birthday Event 2017
*August 10: Kobushi Factory Taguchi Natsumi Birthday Event 2017
*August 15: Kobushi Factory Hirose Ayaka Birthday Event 2017
*September 4: Tsubaki Factory Asakura Kiki Birthday Event 2017
*September 29: Tsubaki Factory Ono Mizuho Birthday Event 2017
*October 16: Country Girls Yamaki Risa Birthday Event 2017
*October 19: Morning Musume '17 Nonaka Miki Birthday Event
*October 20: Tsubaki Factory Niinuma Kisora Birthday Event 2017
*October 23: ANGERME Kasahara Momona Birthday Event 2017
*October 24: ANGERME Kamikokuryo Moe Birthday Event 2017
*October 27: Morning Musume '17 Kudo Haruka Birthday Event
*October 30: Morning Musume '17 Fukumura Mizuki Birthday Event
*November 6: Tsubaki Factory Ogata Risa Birthday Event 2017
*November 7: Morning Musume '17 Iikubo Haruna Birthday Event
*November 16: Tsubaki Factory Tanimoto Ami Birthday Event 2017
*November 22: ANGERME Takeuchi Akari Birthday Event 2017
*November 24: Tsubaki Factory Yamagishi Riko Birthday Event 2017
*November 30: Morning Musume '17 Kaga Kaede Birthday Event
*December 1: Juice=Juice Miyamoto Karin Birthday Event 2017
*December 7: Juice=Juice Uemura Akari Birthday Event 2017
*December 29: Inaba Manaka Birthday Event 2017
==Theater==
*February 23 - March 4: JK Ninja Girls
*June 2 - June 11: Pharaoh no Haka
*October 5 - October 15: Yumemiru Television
*October 26 - November 12: Bokutachi Karen na Shounen Gasshoudan
*November 27 - December 3: Ichimai no Ticket ~Beatles ga Yattekuru!~
==Auditions==
*July 15: Hello! Project Shin Member Audition announced and begins.
*December 4: Hello! Project Shin Member Audition results announced.
==Media==
*January 22: Furusato no Yume begins.
*June 14: Yajima no Heya becomes Fukumura no Heya.
*July 17: JK Ninja Girls theatrical release.
==Publications==
*January 1: Hello Pro Maruwakari BOOK 2017 WINTER
*January 28: Haruiro - Iikubo Haruna
*February 19: Morito Chisaki - Morito Chisaki
*March 6: Momochi - Tsugunaga Momoko
*March 31: Eien - Suzuki Airi
*April 27: Riko - Yamagishi Riko
*May 1: ℃-ute Last Official Book
*May 15: MURO - Murota Mizuki
*May 18: Hello Pro Specia~l
*May 20: Buono! Festa 2016 LIVE Mini Shashinshuu
*May 23: Airi Mania - Suzuki Airi
*June 30: Tsugunaga Momoko Sotsugyou Album - Tsugunaga Momoko
*July 15:
**Hello Pro Maruwakari BOOK 2017 SUMMER
**Hatachi - Fukumura Mizuki
*July 17: Eiga "JK Ninja Girls" Official Photobook - Kobushi Factory
*August 7: MUSUBU - Funaki Musubu
*August 30: Senkou Hanabi - Makino Maria
*September 10: Brilliant - Hikari Kagayaku - ℃-ute
*October 27: Kudo Haruka - Kudo Haruka
*November 11: Rei - Inoue Rei
*November 17: Sakura Breeze - Oda Sakura
*December 11: Morning Musume '17 Shijou Drama "Haikei, Haru-senpai! ~Higashi-Azabu Koukou Hakusho~"
==Anniversaries==
*January 2: Kobushi Factory's Formation 2nd anniversary
*January 28: Morning Musume's Major Debut 19th anniversary
*February 3: Juice=Juice's Formation 4th anniversary
*February 21: ℃-ute's Major Debut 10th anniversary
*March 25: Country Girls' Major Debut 2nd anniversary
*April 4: ANGERME's Formation 8th anniversary
*April 29: Tsubaki Factory's Formation 2nd anniversary
*May 26: ANGERME's Major Debut 7th anniversary
*June 11: ℃-ute's Formation 12th anniversary
*September 2: Kobushi Factory's Major Debut 2nd anniversary
*September 11: Juice=Juice's Major Debut 4th anniversary
*September 14: Morning Musume's Formation 20th anniversary
*October 10: Juice=Juice Day (JuuJuu no Hi)
*November 5: Country Girls' Formation 3rd anniversary
Category:2017