Displaying web page creation date in google

You're practicing a little Google-fu to figure something out, and the top few results look like they're exactly what you're looking for. The problem: When you get to the page, they're completely outdated.

To make sure you know when a page was published before you visit the site, just add the following to the end of the URL of your search results:

&as_qdr=y15

So, for example, the following URL searches Google for "Hackintosh" and displays datestamps on every result:

http://www.google.com/search?q=hackintosh&as_qdr=y15

When you're searching for something and the date is important—you probably don't want to follow an outdated Hackintosh guide, for example—you can quickly identify newer web pages. The operator you add to the end of the URL returns web pages indexed by Google over the past 15 years, but very old items will list as January 31, 2001.

http://lifehacker.com/5239562/display-the-date-a-web-page-was-published-in-search-results

Google can reorder search and news results from the last day, week, a few months, or entire year by adding a small string to the end of the search URL. Just add this string—&as_qdr=d—to the address bar and hit enter. You'll get a custom drop-down box that lets you re-order results based on date. It's great for getting past the same top results you've already looked through, as well as grabbing only the newest links related to gadgets, software, or whatever else you're searching. Sadly it doesn't work on Google Images, but let us know in the comments if it does work on other Google searches.

http://lifehacker.com/384375/filter-google-results-by-date-with-a-url-trick