I have a website with a number of long form content articles that I keep updated. The page generates two date snippets from this: <time itemprop="datePublished" ...
How do I find out when a particular URL was first indexed by Google? I'd prefer a solution that works even for competitors' URLs that are not owned by me.
On most posts on my website the date is displayed. There are however some posts where I would not like to show the date. Would it be better to use display:none; via css or actually remove the code ...