On Friday, December 18, 2026, Avengers: Doomsday and Dune: Part Three open in theaters on the same day. Fans have been calling it Dunesday for months, and the comparisons to the Barbenheimer summer of 2023 haven't stopped since. If you're planning to see both, here's how to pull it off.
1. Decide your format first
Multiple outlets have reported that Dune: Part Three secured an exclusive IMAX window for its opening, which means Avengers: Doomsday will mostly play in Dolby, premium large-format and standard screens that weekend. If IMAX matters to you, lock in your Dune seats first, then build your Avengers showtime around it.
2. Pick your order
Our take: watch the longer, heavier film first while you're fresh. A slow-burn desert epic hits differently at 11 p.m. than at noon. Save the crowd-pleaser for the evening, when the audience energy peaks.
3. Leave a real break
Give yourself at least 90 minutes between showtimes. Eat an actual meal, stretch, and refill your water. Two back-to-back blockbusters can easily add up to six hours in a seat.
4. Book early
Presales have been strong for both films, and reports say premium-format showings for opening weekend are already selling out in some cities. If you want a specific theater or seat, don't wait.
5. Dress for the occasion
Barbenheimer had its pink-and-black split. Dunesday is shaping up the same way: one fit, two universes. Our Bundle & Save collection is built for exactly this. Grab a tee and a hat and take 10% off automatically, with free US shipping on orders of $75+.
Order by early December so your gear arrives before the big day. See you on Dunesday.
Dunesday FAQ
When is Dunesday?
Dunesday is Friday, December 18, 2026, when Avengers: Doomsday and Dune: Part Three both open in theaters.
Should I watch Dune: Part Three or Avengers: Doomsday first?
We suggest the longer, heavier film first while you're fresh, then the crowd-pleaser in the evening. Either order works if you leave a 90-minute break.