Google has a long history of famous algorithm updates, search index changes and refreshes.

June 2019 Core Update

March 2019 Core Update

August 2018 Core Update aka Medic Update

April 2018 Core Update

March 2018 Core Update

December 2017 Core Update

Google Local August 2017 Hawk Update

Google Fred Update – unconfirmed March 2017 update

Google Local September 2016 Possum Update

Google RankBrain Algorithm

Google Mobile-Friendly Algorithm

January 2018 Core Update

Google Hummingbird

Telly Updates Me

Google Mobile Friendly Update

Google Panda Update

Google Penguin Update

Google Pigeon Update

Google Payday Update

Google Pirate Update

Google EMD (Exact Match Domain) Update

Google Top Heavy Update