Google is today celebrating Pi Day, which is a holiday observed in in various countries to commemorate the mathematical constant π [pi]. Google is marking the occasion with a new doodle that features a pi-related sketch with a Google Logo watermark in the background.
Since pi approximately equals 3.14, March 14 [3-14] was chosen as the date to celebrate pi in countries that use the month/date format. Pi Day was founded by now-retired physicist Larry Shaw 1988 at the San Francisco Exploratorium. Nowadays, the holiday is celebrated by eating different kinds of pie, and by discussing the relevance of pi.
It’s also important to take into account that today also happens to be Albert Einstein’s birthday, though Google has not included any references to it.