Oops, it doesn't look like 'championshipone hell of a day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
nae nae

Nae Nae Day
kale

Kale Day
lash

Lash Day
self appreciation

Self Appreciation Day
chocolate milkshake

Chocolate Milkshake Day
me

Me Day
buddy

Buddy Day
tell a fairytale

Tell A Fairytale Day
reading

Reading Day