date display

https://codex.www.ads-software.com/Function_Reference/the_time
https://codex.www.ads-software.com/Function_Reference/the_date

what is ‘article section’?
single post? – then edit single.php (?)
home page? – then edit index.php (?)
might be in loop.php (?)
is the ‘upload date’ the same as the ‘publish date’ ?

all of you have not supplied enough details for a more concise answer.

theme?
link to your site?
where exactly in relation to the post title or content do you want to show the date?

First of all, thanks for your quick reply!
Yes, the “upload date” is the same as the “publish date”. We want the date to be visible next to the headline of every post. But not on the whole homepage like e.g. the main page, just for certain posts. On our page you’ll find them in the “news” section.
Sorry, we’re totally beginners, but we hope that you now better understand what we mean.

link to your site?

does the ‘news’ section have its own template?

Well, this is our main page: https://www.fs-romanistik-bonn.de/
On the sidebar you’ll find “Aktuelles” which are the news.
By clicking on it you’ll get to the posts ( the link still doesn’t work because the theme is still not activated, we think):
https://www.fs-romanistik-bonn.de/?p=459. E.g. on the first post “Weihnachtsfrühstück” we want to have the publish date in the same line.
Any suggestions? Thank you.

the date etc info is aready in your template; just suppressed with some global ‘display: none;’, ‘font-size:0px;’, ‘color:#000;’ etc, on some of the css styles.

reverse that.

and then you really need to find a way to define: ‘just for certain posts’ in a way that it could be programmed using either the css classes already output for each post div; or in terms of conditional tags.