Is there a way to see when a page was first published, by checking when it was first cahced by google (obviously its not 100% fool proof because there is a couple of days delay in some cases but it will give you a good idea.)

The only other way i could think of checking it published date is if the page / post had a publicly viable time stamp on it, but in the case im looking for it, it dosnt have a publicly visible time stamp.