What is Google PageRank?

Google PageRank is a Ranking Algorithm developed by Larry Page and used by Google.Google PageRank algorithm assigns a numerical weight to each and every page (crawled by Google).Higher the Numerical weight better the reputation of that particular page.Google PageRank generally determines legitimacy of a particular page/website.The total range of weight is divided into 11 parts (non linear) and assigns PR0 to PR10.Higher the PageRank better the possibility of ranking in Google Search.

Confirmed Google PageRank update History | PR update History

Here I am going to share Google PageRank update History from the beginning, these PR update dates are collected form various sources like Google forum, DP, and many more personal and official blogs.

Year	Whether confirmed or not	PageRank update date
2012	UpDate Next Google PageRank update Date	10 September – 15 September, 2012
2012	Last Confirmed PageRank update	3rd May 2012
2012	Toolbar PageRank Update	7 February 2012
	Toolbar PageRank Update	7 November 2011
2011	Toolbar PageRank Update	Last Week of August 2011
2011	Toolbar PageRank Update	JULY 2011
2011	Toolbar PageRank Update	JUNE 2011
2011	Toolbar PageRank Update	JANUARY 2011
2010	Toolbar PageRank Update	April 2010
2009	Toolbar PageRank Update	Dec 31, 2009
2009	Toolbar PageRank Update	30 October 2009
2009	Toolbar PageRank Update	27 May 2009
2009	Toolbar PageRank Update	2 April 2009
2008	Toolbar PageRank Update	30 December 2008
2008	Toolbar PageRank Update	27 September 2008
2008	Toolbar PageRank Update	26 July 2008
2008	Toolbar PageRank Update	29 April 2008
2008	Toolbar PageRank Update	10 January 2008
2007	Toolbar PageRank Update	26 October 2007
2007	Toolbar PageRank Update	28 April 2007

As early stated these PageRank update dates are collected form various sources hence may contain errors. If you find any of these previous Google PageRank update dates wrong/incorrect then don’t hesitate to correct me.