Oops, it doesn't look like 'currywurst day' is a national day..

Other days

Gum Day

China Day

Hiv Awareness Day

Tell Ur Crush You Like Them Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Tell A Fairytale Day

Lumpy Rug Day

Polyamory Day

Pumpkin Day

Martini Day