First of all, I needed to map managed property in the Central Administration:
Search Service Application -> Metadata Property Mappings :
"New managed property" , for me it was ''CreatedDate" and I needed to map it.
I found some answer in the internet : Article ,
but in my situation it returned 1/1/1601. Therefore , mapped all of the fields from the article separately. So, for me it was Basic:15 - the right result. But for everyone it differences.
And, of course, after do it, I had to run full crawl.
When I did all these things, I needed to edit the search results web part :
1.Insert to "Fetched Properties" new Column "CreatedDate"
2.Insert to the "XSL Editor" new template for CreatedDate
It's all for this time.
