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

Other days

Slime Day

Latina Equal Pay Day

Chocolate Milkshake Day

Tell A Fairytale Day

Polyamory Day

Get Funky Day

Carpenters Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Self Appreciation Day

Lash Day