How to translate the author line "Submitted by ... on ..." I've created a custom content type in Drupal 8.9.1. Each content post automatically renders the line
Submitted by author_name on 08.07.2020 - 18:21

Even though my Drupal system language is set to German, I cannot find a way to show a translated version of this &quot;submitted by&quot; text.
When I check the translations page under /admin/config/regional/content-language I also see a correct translation for the segment (&quot;Geschrieben von&quot;). But there's no indicator how this is mapped to the actual English value.

I've also seen posts saying that you have to do that manually in the Node Template. But I have not found such template and guess the approach has changed after Drupal 7.
While the page /admin/config/regional/content-language holds the actual translated text, it's not the place where the &quot;Submitted by&quot; translation is derived from. To do so you need to

Navigate to Configuration &gt; Regional &amp; language &gt; User interface translation
Search for &quot;Submitted&quot; in the String contains field. Note the uppercase S (thank you @Hudri).
Now enter the translation and save it. Also note the placeholders for author and date information.