Magento 2 Blog Plus and Blog Extra v2.9.1 has been released with new options to set the dates format and disable dates displaying. Please note that the options described in this article are available only for the Blog Plus and Blog Extra users. In order to configure blog dates displaying in Magento 2 navigate to Stores > Configuration > Magefan Extensions > Blog.
Post Date
In the Design ( Blog+) section you can enable the Display Posts Publication Date and set the Posts Publication Date Format.
To learn more about date formats follow the link.
That is how it looks like on the storefront:
In case you disable the Display Posts Publication Date, it will not be displayed in the post information on the storefront.
Comments Date
The publication date is displayed not only for blog posts, but blog post comments as well. In the Post View section of blog configurations find the Comments option and set the Comments Date Format (Blog+). Note that the comments publication date option is available only if you choose to use Magefan Blog Comments.
That is how it looks like on the storefront:
Archive Date
There is one more dates configuring option available. To configure it go to the Sidebar section of blog configurations, find the Archive Widget and set the Archive Date Format.
That is how it looks like on the storefront:
Troubleshooting
Have you changed the date formator disabled it at all, flushed Magento Cache and still don't see any changes on your storefront? The most likely there is a problem with blog templates which have been rewritten in your Magento 2 Theme. First of all, check the templates in the folder:
app/code/design/frontend/ThemeVendor/themename/Magefan_Blog/templates
We recommend you to pay attention to the PHP date functions.