On the 15th of February is the National Dutch Day (Dutch: Nationale Nederlanden Dag). It's an annual event in February that celebrates the dutch culture. Activities during the day are Dutch games such as bite-the-cake and nail shitting, eating herring, syrup waffles and croquette (real dutch delicacies). Additionally it is encouraged (but not required) to walk on clogs and wear Dutch folklore costumes.
The day is a celebration day for those who can see the value and importance in the Dutch culture and history.