Oops, it doesn't look like 'casual friend day' is a national day..

Other days

gallery

Gallery Day

embarrass your best friend

Embarrass Your Best Friend Day

one

One Day

healing

Healing Day

law

Law Day

stress awareness

Stress Awareness Day

Me Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

mean girls

Mean Girls Day

slime

Slime Day