Google can display the date of your post in search results.
To do that, go to SEO, Titles & Metas.
In Post Types tab, check Display date in Google search results? for each post type desired.
Click Save Changes.
Clear your cache if necessary.
Activating this option will add the dedicated meta tags to the head of your document:
<meta property="article:published_time" content="2023-03-15T16:41:44+00:00"> <meta property="article:modified_time" content="2023-07-17T13:39:34+00:00">
However, even if you have NOT activated this option, Google can still display the post date in search results by using other dates from your source code.