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

Other days

comfy

Comfy Day
unicorn

Unicorn Day
kiss a ginger

Kiss A Ginger Day
cuddle up

Cuddle Up Day
special education

Special Education Day
boba

Boba Day
lash

Lash Day
one

One Day
blanket fort

Blanket Fort Day
stress awareness

Stress Awareness Day