Wikipedia:Wikipedia Day
Appearance
January 15 is known as Wikipedia Day to Wikipedians. On this date in the year 2001, the Wikipedia went public after spending five days on Nupedia.
Celebration
Why not celebrate by writing an encyclopedia article on a topic of your choice? See how to start a page.
If you're interested in a Wikipedia T-shirt, add your name to Wikipedia T-shirts.
See also: Magnus Manske Day