Wikipedia turns 25 on 15 January, and it’s time to party! We’re calling on all fans of Wikipedia who’ve been shaping the sum of all human knowledge for a quarter century to join in the celebration. Here’s to making the internet just a little bit better, article by article. 

The celebration lineup includes:

• A kickoff countdown: A 15-minute pre-party, starting at 15:45 UTC, with Wikipedia trivia and birthday wishes from around the globe. Come early and get warmed up!
• A tour through 25 years of collaboration at its best: Watch how the 300+ language Wikipedias have grown since Wikipedia was born a quarter-century ago with the simple phrase "Hello, World!"
• An ode to the talk page: Honoring the debates, detours, and consensus-building that make Wikipedia... Wikipedia.
• Musical performances: Pieces created with Wikipedia and Wikimedia content, composed for the editors powering the projects.
• Wikipedia games: A chance to test your knowledge to win freshly minted, special-edition Wikipedia 25 merch.
• Spotlights on Wikipedians everywhere: Stories from across regions and generations.
• Special guest appearances: Because every great birthday needs a few unexpected cameos. And yes, your longtime favorites will be there too.
  
  

The party will stream live on YouTube. More information, including the program and link to join, coming soon.