Google’s new “show options” feature brings lots of useful options to get you going with your search results. One such feature lets you restrict results to pages / posts from the “past 24 hours”. You can use this feature in combination with Google’s “site” and “link” operators to find, when Google last crawled your site. Just visit google.com, and using “site” or “link” operator add the domain you want to search “link:example.com”, you’ll see all pages Google indexed. Now click “Show options” in the top left of the search result, then in the left hand bar, click “Past 24 hours”.
Source:→ Google Blogoscoped