Google Panda Updates
Google Panda is a change to Google's search results ranking algorithm. It was first released in February 2011.
Here's a list of Google Panda updates from Panda 1.0 to Panda 3.1.
Panda 1.0: February 24, 2011
Panda 2.0: April 11, 2011
Panda 2.1: May 9, 2011
Panda 2.2: June 18, 2011
Panda 2.3: July 22, 2011
Panda 2.4: August 12, 2011
Panda 2.5: September 28, 2011
Panda 2.5.1: October 5, 2011
Panda 2.5.2: October 13, 2011
Panda 2.5.3: October 20, 2011
Panda 3.1: November 18, 2011
Panda 3.2: January 14, 2012
"Data Refresh" - Sites which were not punished previously, will be punished now
Panda 3.3: February 29, 2012
Panda 3.4: March 23, 2012
Panda 3.5: April 19, 2012
Panda 3.6: April 27, 2012
Panda 3.7: June 8, 2012
Panda 3.8: June 25, 2012
Panda 3.9: July 24, 2012
Panda 3.9.1: August 20, 2012
Panda 3.9.2: September 18, 2012
Let me know if i missed something!
