I want my entire site in English, but the dates to be in another language.
I tried to set PHP local like this:
setlocale(LC_ALL, 'he');
Setting my whole website to another language from the admin panel does change the time language, but I don't want this. Any ideas on how to accomplish that?
It sounds like you want to create a multilingual site; even if you aren't displaying multiple languages on the admin side, it sounds like you want one language in the backend and another on the frontend.
You might want to check out WPBeginner's article on multi-language WordPress.
If all you are changing is the date language, and you are comfortable editing template, then you can alter the date displays alone using PHP.
You can change the global site language under Settings > General, but then edit your user account to set the admin language to whatever you want for your user account. For more info reference https://wptavern.com/wordpress-4-7-to-introduce-user-specific-language-setting-for-the-admin
