Could anyone please tell me when Google now update its new algorithm? and recent update on Google in Feb, 2013?
No major update from Google this month till now. But you can't say anything with Google, still few days are left.
on update in feb 2013, but in last month in jan 2013, there are 2 update by google. first is panda update on 17 jan and page rank update on 22 jan so please u check it.
Google does not make changes only in search engine but also in other tools such as Adsense. So it is a cumulative patch for webmaster tools. Information on the changes can be found on their official blog.
Google makes changes everyday, but they are so small that people don't notice it. The major updates are hardly announced, and you'll usually find out about them within the couple of days at launch point. Hope that helps!
No Major Update from google this year but yes there is google panda refresh every month. or may be google penguin data refresh coming soon..