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

Other days

youth

Youth Day
nail polish

Nail Polish Day
self care

Self Care Day
ponytail

Ponytail Day
one

One Day
boba

Boba Day
slime

Slime Day
kiss a brunette

Kiss A Brunette Day
tulip

Tulip Day
book

Book Day