| To. Day | 
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|  Digital and "D-Day" version cover | 
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| Released | June 5, 2018 (2018-06-05) | 
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| Length | 18:36 | 
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| Language | Korean | 
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| Label | Stone Music | 
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|  "DKDK (두근두근)"Released: June 5, 2018
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 To. Day is the second EP of South Korean girl group Fromis 9. The EP was released on June 5, 2018 by Stone Music. The physical version of the EP is available in two versions: "D-1" and "D-Day". Both of them consist of the same six songs, including the lead single, "DKDK (두근두근)". Member Jang Gyu-ri was not involved in the EP due to her participation in Produce 48.[1][2][3] 
  Track listing
 | Title | Lyrics | Music | Arrangement | 
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| 1. | "Close To You" (다가가고 싶어; Dagagago Sipeo) | Lee Sae-romSong Ha-youngPark Ji-wonRoh Ji-sunLee Seo-yeonLee Chae-youngLee Na-gyungBaek Ji-heon
 | TAK | TAK | 2:05 | 
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| 2. | "Think of You" (너를 따라, 너에게; Neoleul Ttala, Neoege) |  |  | TAK | 3:33 | 
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| 3. | "Pitapat (DKDK)" (두근두근; Dugeundugeun) | Baekgom[a]Bbaekkom[b]Song Ha-youngPark Ji-wonLee Seo-yeon
 | BaekgomPark Ki-tae (PRISMFILTER)
 | BaekgomAnchor (PRISMFILTER)Park Ki-tae(PRISMFILTER)
 | 3:03 | 
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| 4. | "22Century Girl" (22세기 소녀; 22Segi Sonyeo) |  | WonderkidBreadbeatShinkung
 | WonderkidBreadbeatShinkung
 | 3:35 | 
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| 5. | "Clover" |  |  |  | 3:21 | 
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| 6. | "First Love" |  |  |  | 2:59 | 
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| Total length: | 18:36 | 
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 Charts
  Release history
    | Country | Date | Distributing label | Format | 
  | South Korea | June 5, 2018 | Stone Music Entertainment, CJ E&M Music | CD, digital download | 
  | Various | 
 Notes
  References
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|  Song Ha-youngPark Ji-wonLee Chae-youngLee Na-gyungBaek Ji-heon
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| Studio albums |  | 
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| Extended plays |  | 
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| Single albums |  | 
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| Singles |  | 
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| Related topics |  | 
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| Authority control databases |  | 
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