Oops, it doesn't look like 'rail company cancels all trains to and from stockholm central station for rest of day' is a national day..

Other days

Embarrass Your Best Friend Day

Brow Day

Latina Equal Pay Day

Polyamory Day

Special Education Day

Comfy Day

Pumpkin Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Tell Ur Crush You Like Them Day

Bonang Day