Oops, it doesn't look like 'make your friends uncomfortable and jealous by labeling one friend your best friend day' is a national day..

Other days

Blanket Fort Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Get Funky Day

Fiancee Day

Comfy Day

Chocolate Milkshake Day

Book Day

Ask Out Your Crush Day

Unicorn Day

Hiv Awareness Day