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On November 30th,Google update 22 panda confirmed that they ran a refresh to the Google Panda algorithm on Wednesday, November 21st.
On November 20th, we asked Google about a Panda refresh – since we were fairly confident there was some sort of update. Google told us there was no update but an update would be coming within 7 to 10 days. The update came a day later, not several days later.
This would make this the 22nd Panda refresh we’ve tracked. The 21st Panda refresh was on November 5th and impacted about 1.1% of English queries. This update, Google told us 0.8% of English queries were affected to a degree that a regular user might notice.
Here are all the releases so far for Panda:
Panda Update 1, Feb. 24, 2011 (11.8% of queries; announced; English in US only)
Panda Update 2, April 11, 2011 (2% of queries; announced; rolled out in English internationally)
Panda Update 3, May 10, 2011 (no change given; confirmed, not announced)
Panda Update 4, June 16, 2011 (no change given; confirmed, not announced)
Panda Update 5, July 23, 2011 (no change given; confirmed, not announced)
Panda Update 6, Aug. 12, 2011 (6-9% of queries in many non-English languages; announced)
Panda Update 7, Sept. 28, 2011 (no change given; confirmed, not announced)
Panda Update 8, Oct. 19, 2011 (about 2% of queries; belatedly confirmed)
Panda Update 9, Nov. 18, 2011: (less than 1% of queries; announced)
Panda Update 10, Jan. 18, 2012 (no change given; confirmed, not announced)
Panda Update 11, Feb. 27, 2012 (no change given; announced)
Panda Update 12, March 23, 2012 (about 1.6% of queries impacted; announced)
Panda Update 13, April 19, 2012 (no change given; belatedly revealed)
Panda Update 14, April 27, 2012: (no change given; confirmed; first update within days of another)
Panda Update 15, June 9, 2012: (1% of queries; belatedly announced)
Panda Update 16, June 25, 2012: (about 1% of queries; announced)
Panda Update 17, July 24, 2012:(about 1% of queries; announced)
Panda Update 18, Aug. 20, 2012: (about 1% of queries; belatedly announced)
Panda Update 19, Sept. 18, 2012: (less than 0.7% of queries; announced)
Panda Update 20 , Sep. 27, 2012 (2.4% English queries, impacted, belatedly announced
Panda Update 21, Nov. 5, 2012 (1.1% of English-language queries in US; 0.4% worldwide; confirmed, not announced)
Panda Update 22, Nov. 21, 2012 (0.8% of English queries were affected; 0.4% worldwide; confirmed, not announced)
