Oops, it doesn't look like 'historic site day' is a national day..

Other days

gum

Gum Day
nail polish

Nail Polish Day
self care

Self Care Day
nae nae

Nae Nae Day
tell a fairytale

Tell A Fairytale Day
bow tie

Bow Tie Day
bonang

Bonang Day
slime

Slime Day
brow

Brow Day
first love

First Love Day