Downey Jr. and Chalamet Coin Dunesday for 2026 Releases

Actors Robert Downey Jr. and Timothée Chalamet unveiled a playful nickname for the upcoming simultaneous release of their major films during a question-and-answer session in Los Angeles on Wednesday. The duo, appearing together at a special screening of Chalamet's drama Marty Supreme, dubbed the event "Dunesday" to reference the shared premiere date of Marvel's Avengers: Doomsday and Warner Bros.' Dune: Part Three on December 18, 2026.

Downey Jr., who will portray the villainous Doctor Doom in Avengers: Doomsday, addressed the audience about the potential box office overlap. "We both have films opening on December 18, and we decided to coin it. We're thinking Dunesday," he said, according to attendees and video footage from the event. He added with a lighthearted tone, "We'll see if we're still friends by then," suggesting an amicable approach to what could become a significant theatrical clash.

The term draws inspiration from the 2023 "Barbenheimer" phenomenon, when Greta Gerwig's Barbie and Christopher Nolan's Oppenheimer debuted on the same day in July. That pairing turned a potential rivalry into a cultural milestone, as moviegoers embraced double features combining the...