Google page rank and back link updation history

Hi Friends
I want to let you know that about the google updation history for the page rank and back link see this site http://www.seologs.com/google-updates.html
here you can fine this about the calender of updation,
this is very important to know about the search engine placement and if you want to big deal in then its very important to know about the indexing methoads etc lets no one is know that when the pr is going to update as the last PR was update in 28 april and back link updation was at 22 march this is general question for the all seo that how many pages are indexed and what is the page rank of his website. so you needs to know its the very basice for the, if you are in the internet marketing.
keep you update

 

The backlink update for my site happens every day, even twice a day.

 

thanks for the info but these are all known thinks

 

Here is another link that I use to see what is going on for updates: http://www.seocompany.ca/pagerank/page-rank-update-list.html

 

Thanks for mentioning seologs.com. Much appreciated.

 

Is there any specific tool which shows the history of all previous Page Ranks a Website Attained during PR crawl by Google ?
I have checked these both tools mentioned above. But are not helping.

 

3wtemplates.com can trace your pagerank history