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

Get Funky Day

Chocolate Milkshake Day

Boy Friend Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Coffee Day

Carpenters Day

Eat What You Want Day

Bow Tie Day

Donate Your Hair Day

Boyfriend Day