15 January is Wikipedia's 15th birthday. That's right, it's Wikipedia Day! This is the day we celebrate the beginning of the Wikimedia movement and all of the free knowledge projects we share with the world. 

To celebrate, we are asking Wikipedia visitors (both anonymous readers and logged-in users)  to tell us what Wikipedia means to them. It's all about celebrating the impact of our movement. 

For the next 6 days, we will use some Central Notice banners to notify users of our birthday milestone and ask for their thoughts. The banners will be visible on Meta, Commons, and all language Wikipedias. The messages have been translated by the community into more than 98 languages (and counting). The banners will link to the Wikipedia15 microsite [1], where visitors can read the stories of 15 Wikimedians, review milestones from 15 years of Wikipedia, and contribute thoughts on what Wikipedia means to them.  

Per MediaWiki, the timing will follow UTC. And of course, if you dismiss the notice, it will permanently opt you opt of seeing Wikipedia15 banners for the rest of the week. 

Questions? Send them my way. 

Want to get involved? Why not go to a Wikimedia party or event[2], edit something new, share a Wikipedia15 illustration[3], or share a Wikipedia birthday wish with #Wikipedia15 on your preferred social media! 

All the best, 

- Zack 

[1] https://15.wikipedia.org  

[2] There are 149 events planned! Find one near you: https://meta.wikimedia.org/wiki/Wikipedia_15/Events

[3] https://commons.wikimedia.org/wiki/Category:Wikipedia15_Mark