In Chawosauria, Eurasian Eagle Owl Day is a national holiday where Chawosaurians celebrate their national bird, the Eurasian Eagle Owl.

To Chawosaurians, the Eurasian Eagle Owl represents knowledge, wiseness, education, and bravery. During this holiday, Chawosaurians greed each other with a phrase "Happy Owl Day" and do a knock-knock joke revolving the Owl. The knock-knock joke goes something like this:

"Knock Knock: who's there? who: who who? who who there's an owl overthere"
Chawosauria's national bird is shown in military parades, nationalistic parades, schools, and other public institutions.