Useless Days of Significance.
Even though most of the these are American only (really? It doesn't sound like them to do stupid things) I think a few of them would go down nicely here too.
Today is "Clear Off Your Desk Day" and tomorrow is "National Hugging Day". So if you're working late and read this why not find the cleaner and attempt to hug/him her across your desk and maximise your celebration opportunities?
It's also noteworthy that February is "National Boost Your Self-Esteem Month". So, get confident stupid!