Google stopped showing time frame for the cached results of the websites; Why? Any alternatives?

[vtmoz]

Hi Moz community

If we Google "site:website.com"; it'll list the cached pages from the website. And we used to check them on required date range like how and which pages got indexed. But date range is not working now and the results are missing the pages which got indexed at the selected date range. Any idea why Google does this? Any alternatives to find the recently indexed pages?

Thanks