Oops, it doesn't look like 'championship titles in one day' is a national day..

Other days

bounce

Bounce Day

eat what you want

Eat What You Want Day

Me Day

artists

Artists Day

mean girls

Mean Girls Day

one

One Day

self care

Self Care Day

nail polish

Nail Polish Day

special education

Special Education Day

appreciate yaself a lil extra

Appreciate Yaself A Lil Extra Day