timespace coordinates: 1964 Yokohama, Japan
From Up on Poppy Hill (Japanese: コクリコ坂から Hepburn: Kokuriko-zaka Kara, “From Coquelicot Hill”) is a 2011 Japanese animated drama film directed by Gorō Miyazaki, scripted by Hayao Miyazaki and Keiko Niwa, animated by Studio Ghibli for the Nippon Television Network, Dentsu, Hakuhodo DY Media Partners, Walt Disney Japan, Mitsubishi, and Toho, and distributed by the latter company. It is based on the 1980 serialized Japanese comic of the same name illustrated by Chizuru Takahashi and written by Tetsurō Sayama.
Set in 1964 Yokohama, Japan, the film tells the story of Umi Matsuzaki, a high school girl living in a boarding house, ‘Coquelicot Manor’. When Umi meets Shun Kazama, a member of the school’s newspaper club, they decide to clean up the school’s clubhouse, Quartier Latin. However, Tokumaru, the chairman of the local high school and a businessman, intends to demolish the building for redevelopment and Umi and Shun, along with Shirō Mizunuma, must persuade him to reconsider. (wiki)

historical basis / imdb