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

Other days

stud

Stud Day
hoodie

Hoodie Day
ride the wind

Ride The Wind Day
boba

Boba Day
gum

Gum Day
nail polish

Nail Polish Day
frozen yogurt

Frozen Yogurt Day
donate your hair

Donate Your Hair Day
buddy

Buddy Day
ormille

Ormille Day