@j1simon said:
Country used to display release date
I am not in the US and in my account settings I have set Spain as my country.
Why then does your website show me the US release date as the main one?

In Settings, on the same page where you selected your country, you must specify your "Default Language".
It is the chosen language-COUNTRY that determines this data in its WEB interface.
In your case you should choose es-ES I believe.

Of course, if no user has added the release date in Spain, the default will be the date in en-US.

I have correctly indicated that information: https://i.imgur.com/fkpBeUL.png
But, for example, the movie "La Pasajera" shows me the US release date: https://i.imgur.com/B2MhvFM.png
The film has a release date in Spain: https://i.imgur.com/jQZhwr3.png

@j1simon said:
I have correctly indicated that information: https://i.imgur.com/fkpBeUL.png
But, for example, the movie "La Pasajera" shows me the US release date: https://i.imgur.com/B2MhvFM.png
The film has a release date in Spain: https://i.imgur.com/jQZhwr3.png

I'm not really sure but I think the issue involves Release types.
https://www.themoviedb.org/bible/movie/59f3b16d9251414f20000009
In this movie The Passenger (2022) only the US has Release Theatrical (limited)
https://www.themoviedb.org/movie/869399-la-pasajera/edit?active_nav_item=release_information
Some countries only have Premiere (festival), like Spain.
So I think Theatrical overrides Premiere.
If and when there is a Theatrical date in Spain this new date should appear on the Spain web interface.