Keen Day is a yearly celebration in the Keen Community, taking place on March 14. (The rationale behind this comes from Keen's IQ. March 14 is 3/14 when written in the American format.)
Many Keeners try to plan their projects so as to have releases on Keen Day. (Or, as if often closer to the truth, they decide that they should do something for Keen Day, and quickly create something.)
Here are some of the more famous projects to have been released on Keen Days.
A few releases were not made actually on Keen Day, but are still somewhat belated Keen Day releases: