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

Other days

embarrass your best friend

Embarrass Your Best Friend Day

gum

Gum Day

one

One Day

special education

Special Education Day

Emoji Day

blanket fort

Blanket Fort Day

bonang

Bonang Day

artists

Artists Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

boy friend

Boy Friend Day