The Cathedral is a member of a local association of 28 Protestant, Orthodox and Catholic parishes, Association Oecuménique Etoile-Champs-Elysées. It was founded at the time of the crumbling of the Iron Curtain, and historically represented a spiritual reflection of a network of embassy staff members in neighborhoods in the west side of Paris.

The internationally celebrated week spans feast dates for St. Peter and St. Paul. This year's local celebration en français is hosted by Notre-Dame de Grâce de Passy (10, rue de l’Annonciation, 75016) on Tuesday, January 23rd at 8:30 p.m. All are welcome.