Oops, it doesn't look like 'debt on inauguration day' is a national day..

Other days

lash

Lash Day
unicorn

Unicorn Day
aloxolt

Aloxolt Day
nae nae

Nae Nae Day
self care

Self Care Day
gum

Gum Day
fiancee

Fiancee Day
promposal

Promposal Day
believe

Believe Day
tell a fairytale

Tell A Fairytale Day