Here is the Google algorithm journey timeline by infographic with events of celebrities. You will now see the journey of the Google updates with the time. The best part is that you can remember it with the celebrity events that happened at the same time. Like “No Follow” was introduced by search engines like Google, Yahoo and Bing to stop the spam in 2005 as this event also comprise with the birthday of Rowan Atkinson (Mr. Bean). When Carly Rae Jepsen makes No. 1 hit Google launches Penguin update.
Image source: http://www.stateofsearch.com/wp-content/uploads/2012/11/Google-Algorithm-Updates.jpg