Oops, it doesn't look like 'percy muzi tau day' is a national day..

Other days

comfy

Comfy Day
coffee

Coffee Day
latina equal pay

Latina Equal Pay Day
ruby

Ruby Day
pick me

Pick Me Day
singles

Singles Day
nae nae

Nae Nae Day
fiancee

Fiancee Day
believe

Believe Day
tell a fairytale

Tell A Fairytale Day