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

Gum Day

Tell Ur Crush You Like Them Day

Healing Day

Mean Girls Day

Boy Friend Day

Bounce Day

Pumpkin Day

Nae Nae Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Singles Day