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

Other days

brow

Brow Day
ride the wind

Ride The Wind Day
ormille

Ormille Day
nae nae

Nae Nae Day
raise awerness of zeus

Raise Awerness Of Zeus Day
self appreciation

Self Appreciation Day
ponytail

Ponytail Day
tell a fairytale

Tell A Fairytale Day
self care

Self Care Day
me

Me Day