There is even a wiki set up just to say how the two movies must be viewed together.

https://en.wikipedia.org/wiki/Barbenheimer

Barbenheimer[a] is an internet phenomenon that began circulating ahead of the simultaneous theatrical release of two critically acclaimed blockbuster films diametrically opposed in genre, Barbie and Oppenheimer, on July 21, 2023

Initially a rivalry, the Barbenheimer phenomenon became an internet meme about an instance of counterprogramming. Many suggestions to watch the films as a double feature emerged as their release date approached – as well as what order to watch them in – and performers in both responded by encouraging audiences to watch the films on the same day.

That they must be watched on the same day to understand the real message of both.

Celebrity participation in this trend included American actor Tom Cruise, who bought tickets to see both while his own film, Mission: Impossible – Dead Reckoning Part One, was still scheduled to play in theaters. Both Barbie and Oppenheimer released to critical acclaim

MI7 (pt 1) came out on 7/12.

Barbenheimer released on 7/21.

The mirror.

Sound of Freedom was released on 7/4.

17 days later Barbenheimer was released on 7/21.

https://en.wikipedia.org/wiki/Mission:Impossible%E2%80%93_Dead_Reckoning_Part_One

was theatrically released in the United States on July 12, 2023, by Paramount Pictures.

A direct sequel, Dead Reckoning Part Two, is set to be released on June 28, 2024.

MI7 (pt2) will be released 13 days after Trump's birth on 6/28/2024.

Trump will turn 78 on 6/14/2024.

UPDATE/ EDIT:

u/lonewulf Thanks for pointing out. Trump's birthday is 6/14. New MI7 (part 2) released on 6/28/2024. So 13 days after Trump's birthday in June. They still line up, but I wrote 7/14 instead of 6/14. I have corrected the dates.

Allison Mack released the day before Sound of Freedom released on 7/4.

https://nypost.com/2023/07/05/allison-mack-spotted-for-the-first-time-since-her-release-from-federal-prison/

The actor was released from the Federal Correctional Institution in Dublin, California this week — just in time to celebrate July 4th at home — after serving less than two years behind bars for her role as a “slave master” under Nxivm leader Keith Raniere.