Google.com was registered 20 years ago, on September 15, 1997, according to Icann, the organization that regulates domain names.
Google acknowledged the domain name milestone in a tweet on Friday:
However, Google didn't launch its webpage until a year later, on September 27, 1998, which is the day Google usually refers to as its birthday.
In the 19 or so years since then, Google.com has changed a lot. The primary colors in the logo and clean white background have stayed the same, but nearly everything else has been updated and improved.
Here's what Google looked like the first day it launched.
Here's the home page:
And here's what a Google search results page looked like back then. You can see what Google's retro search page looks like by searching "Google in 1998."
Alyson Shontell contributed to a previous version of this post.