The first day of autumn is being celebrated by fans of the season and Google alike. The search engine is displaying an animated doodle in honor of the occasion.
In the animation, we see a guy turn the gay leaves of the Google trees into beautiful autumn colors before they fall to the ground. The company's name is made out of the left-over trunks and branches.
Once you play the animation, and click through to the search results, Google gives you the actual date in one of its quick answer boxes, and informs you that it is indeed the first day of autumn or the Autumnal Equinox.
The Autumnal Equinox happens when the planet's axis is not tilted either towards the sun nor away from it. This makes it so that the day and the night are close to equal lengths. More on the Equinox here.
Image via Google