Mountain View, California, USA: Did you happen to open Google today and notice a slight change in its logo style? That’s because the search giant is celebrating something special. Today marks Google’s 27th birthday, which is why the doodle looks different. Although Google was originally founded on September 4, there’s a particular reason it observes its birthday today, September 27.

Google was founded by Larry Page and Sergey Brin. The company was officially incorporated on September 4, 1998. However, the date of its birthday has shifted over the years. In 2003, it was celebrated on September 8, in 2004 on September 7, and in 2005 on September 26. Finally, from 2006 onwards, the birthday has been consistently marked on September 27—though the exact reason for fixing this date has never been clarified.

Back in 2006, Google reached a remarkable milestone on September 27. It became the search engine that indexed the largest number of web pages in history at that time. To commemorate this achievement, the company aligned the milestone with its birthday celebration. Since then, September 27 has been recognized every year with Google Doodles, promotional campaigns, and even special offers on its products.

But what does the word Google mean? Interestingly, the term “Google” doesn’t exist in any standard dictionary. The name is derived from the mathematical term Googol, which represents the number 1 followed by 100 zeros. The founders chose it to symbolize the idea of offering endless information.

Here’s how the name stuck: In 1997, a Stanford University student named Sean Anderson, while helping Larry Page and Sergey Brin, accidentally typed “Google.com” instead of “Googol.com” while searching for a domain. Page liked the misspelling, quickly registered it, and that typo turned into the global brand we all know today.

Google’s main headquarters, known as the Googleplex, is located in Mountain View, California, USA. The campus even has a life-sized dinosaur statue named Stan. The company has always pushed forward with unique and innovative ideas. For instance, in 2010, instead of using machines to cut grass at its office lawns, Google rented sheep to do the job—an eco-friendly move that drew global attention.

And here’s a fun fact many users know: if your internet goes down while using Chrome, you can still play the dinosaur game. This offline mini-game, called T-Rex Runner or Chrome Dino, was introduced in 2014. Its purpose was simple— to entertain users and give them the feeling of being in the “dinosaur age” whenever they lost connectivity.