Major Google panda algorithm updates list

For the record, here’s the list of confirmed Panda Updates, with some of the major changes called out with their AKA (also known as) names:

1.     Panda Update 1, AKA Panda 1.0, Feb. 24, 2011 (11.8% of queries; announced; English in US only)

2.     Panda Update 2, AKA Panda 2.0, April 11, 2011 (2% of queries; announced; rolled out in English internationally)

3.     Panda Update 3, May 10, 2011 (no change given; confirmed, not announced)

4.     Panda Update 4, June 16, 2011 (no change given; confirmed, not announced)

5.     Panda Update 5, July 23, 2011 (no change given; confirmed, not announced)

6.     Panda Update 6, Aug. 12, 2011 (6-9% of queries in many non-English languages; announced)

7.     Panda Update 7, Sept. 28, 2011 (no change given; confirmed, not announced)

8.     Panda Update 8 AKA Panda 3.0, Oct. 19, 2011 (about 2% of queries; belatedly confirmed)

9.     Panda Update 9, Nov. 18, 2011: (less than 1% of queries; announced)

10. Panda Update 10, Jan. 18, 2012 (no change given; confirmed, not announced)

11. Panda Update 11, Feb. 27, 2012 (no change given; announced)

12. Panda Update 12, March 23, 2012 (about 1.6% of queries impacted; announced)

13. Panda Update 13, April 19, 2012 (no change given; belatedly revealed)

14. Panda Update 14, April 27, 2012: (no change given; confirmed; first update within days of another)

15. Panda Update 15, June 9, 2012: (1% of queries; belatedly announced)

16. Panda Update 16, June 25, 2012: (about 1% of queries; announced)

17. Panda Update 17, July 24, 2012:(about 1% of queries; announced)

18. Panda Update 18, Aug. 20, 2012: (about 1% of queries; belatedly announced)

19. Panda Update 19, Sept. 18, 2012: (less than 0.7% of queries; announced)

20. Panda Update 20 , Sept. 27, 2012 (2.4% English queries, impacted, belatedly announced

21. Panda Update 21, Nov. 5, 2012 (1.1% of English-language queries in US; 0.4% worldwide; confirmed, not announced)

22. Panda Update 22, Nov. 21, 2012 (0.8% of English queries were affected; confirmed, not announced)

23. Panda Update 23, Dec. 21, 2012 (1.3% of English queries were affected; confirmed, announced)

24. Panda Update 24, Jan. 22, 2013 (1.2% of English queries were affected; confirmed, announced)

25. Panda Update 25, March 15, 2013 (confirmed as coming; not confirmed as having happened)

26. Panda Update 26, July 18, 2013 (confirmed, announced)

27. Panda Update 27 AKA Panda 4.0, May 20, 2014 (7.5% of English queries were affected; confirmed, announced)

28. Panda Update 28 AKA Panda 4.1, Sept. 25, 2014 (3-5% of queries were affected; confirmed, announced)

29. Panda Update 30 AKA Panda 4.2, July 18, 2015 (2-3% of queries were affected; confirmed, announced)

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