Oops, it doesn't look like 'human interaction day' is a national day..

Other days

self appreciation

Self Appreciation Day

bounce

Bounce Day

nail polish

Nail Polish Day

artists

Artists Day

polyamory

Polyamory Day

ponytail

Ponytail Day

singles

Singles Day

mean girls

Mean Girls Day

Emoji Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day