"Chronology of Logica" (ロジカ暦年表) is a page that can be found in Kohinata's library. It contains the overall timeline and events in the series.
|1943(?)||-63||-||-||Current chairman of the Akatsuki group was born.||-|
|1959||-47||-||-||Shirakawa Kazuha was born.|
|1960||-46||-||-||Aoi Kazuya was born.|
|1970||-36||-||-||Kuranaga Nao was born.|
|1972||-34||-||-||Sato Keisuke was born.||Shiohara Yuichi is 11 years old.|
|1973||-33||0||-||(Dec) Himeno Mikami was born.||Born in 1973: Akatsuki Sakurako, Yamabuki Ayato, Haizumi Nozomu, Haizumu Kanau.|
|1979||-27||5||-||(Nov) Kuromiya Momiji was born.||Sato Keisuke is 7 years old.|
|1981||-25||7||-||Mysterious disappearance of children occurring?|
|1982||-24||8||-||(Mar) Yamabuki Otoha was born.|
|1986||-20||13||0||(Apr) Shirakawa Haruka was born.||Born in 1986: Nishimori Sota, Natsuki Kori, Miyashita Hiro.
Shirakawa Kazuha 26 years old.
|1989||-17||16||3||(Dec) Akatsuki Makoto was born.||Born in 1989->1990: Nishimori Aozora, Kuromiya Akira, Murasaki Mizuki, Shirakawa Kaoru, Gin'ya Tetsuro, Ochi Aska, Makura Maxi, Yuurei group.
Kuromiya Momiji 9 years old. Murasaki Kojiro 29 years old.
|1991||-15||18||4||Mikami and Ayato graduated from Tsukimizaka.|
|1993||-13||20||6||(Apr) Haruka entered primary school.|
|1995||-11||22||9||Akatsuki Mai was born.||Makoto is 5 years old.|
|1996||-10||23||10||Condo fire.||Haruka was taken in by Mikami.
Momiji:16, Keisuke:24, Otoha:14
|1997||-9||24||10||(Mar) Otoha graduated from secondary.|
|1998||-8||25||12||(Nov) Aoi family suicide incident.||Aoi Kazuya: 38
Mikami's office relocated.
|2002||-4||29||16||Ochi Aska's death.||She was 12.|
|2003||-3||30||17||(May) Yotsuba cruise ship incident.||Kojiro: 44, Keisuke: 31.
Makoto and Mai transfer schools to Akari School.
|2003||-3||30||17||(Jun) Tsukimizaka barricaded incident.|
|2003||-3||30||17||Natsuki Kori's traffic 'accident'?|
|2003||-3||30||17||Nishimori Aozora's disappearance.|
|2005||-1||32||18||Nishimori Sota, Miyashita Hiro, entered Nijinoha University.|
|2007||+1||34||20||Makura Maxi received a notice from a thief.|