As Google celebrated its 18th birthday with an animated, festive-balloon doodle on Tuesday, there were some confusion regarding the date as the search engine giant has celebrated its birthday on other days in the month of September in the past.
The company was founded by Larry Page and Sergey Brin in 1998. The company's own history lists its incorporation date in 1998 as September 4.
Since 2006, Google has celebrated its birthday on September 27, but the year before that, had it as September 26.