Oops, it doesn't look like 'no indicators day' is a national day..

Other days

ponytail

Ponytail Day
cat girl

Cat Girl Day
ruby

Ruby Day
polyamory

Polyamory Day
self care

Self Care Day
artists

Artists Day
tell a fairytale

Tell A Fairytale Day
bow tie

Bow Tie Day
brow

Brow Day
reading

Reading Day