Oops, it doesn't look like 'give ya girl your hoodie day' is a national day..

Other days

gum

Gum Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
hoodie

Hoodie Day
slime

Slime Day
stress awareness

Stress Awareness Day
buddy

Buddy Day
self appreciation

Self Appreciation Day
my little pony

My Little Pony Day
one

One Day
artists

Artists Day