This Linux distribution was started by Ian Murdock. He named Debian after his then-girlfriend Debra Lynn, therefore the distribution gained the name of Debian. Nowadays with the many derived distributions that use the Debian apt packaging system; the legacy of this distribution will live on long after the anniversary. We will not see the end of the Debian distribution anytime soon; with the rise in popularity of the Rasberry Pi there is renewed interest in using Debian on a small integrated device. The future of Linux is looking very bright indeed, the hobbyist market loves to create new technology using small cheap computers and Linux is the ideal way to power them.
So happy birthday Debian and I hope to see the 30th anniversary as well.