Let's face it, most holidays already marked on your calendar are pretty boring -Valentine's Day, Easter, Father's Day...yawn. If you really want to geek up your wall calendar and ensure you celebrate holidays more appropriate to your specific interests, don't miss io9's round up of great science holiday including Pi approximation day (July 22) and Hagfish Day (October 17). Of course, since they're all science related, certain other geek holidays are left out -after all, you can't miss out on Towel Day.
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