Jean-Luc Godard, Anna Karina, Emilienne Caille, Eddie Constantine, Sami Frey, Danièle Delorme, Yves Robert, Alan Scott, Georges de Beauregard and Jean-Claude Brialy all make uncredited cameo appearances as the actors in the silent film shown to Cléo and her friend. In the extras on the Criterion Collection DVD, the movie is called "Les fiancés du pont Mac Donald ou (Méfiez-vous des lunettes noires) (1961)".
"5 à 7" is a French expression covering activities carried out after work and before returning home for dinner but it was originally and more specifically a colloquial term for an extramarital affair and for the woman involved (on the basis that the liaisons tended to take place between these hours).
Takes place on a Tuesday afternoon, however the German title translates to "Wednesday from 5 to 7."
Ranked number 2 in BBC Culture's "The 100 greatest films directed by women" list.
Underwent a 2K restoration in 2012 through the Archives Françaises du Film du CNC and supervised by writer/director Agnès Varda, with image work done at the Digimage laboratory and sound work at Elude.